chore: upgrade eslint

.eslintignore

@@ -1,5 +0,0 @@
-scripts/
-dist/
-docs/
-.eslintrc.cjs
-index.js

.eslintrc.cjs

@@ -1,10 +0,0 @@
-module.exports = {
-  env: {
-    browser: true,
-    es2021: true
-  },
-  extends: 'love',
-  rules: {
-    "@typescript-eslint/no-non-null-assertion": "off"
-  }
-}

eslint.config.js

@@ -0,0 +1,24 @@
+import config from 'eslint-config-love'
+
+export default [
+  {
+    ...config,
+    files: ['src/**/*.js', 'src/**/*.ts'],
+  },
+  {
+    ignores: [
+      'eslint.config.js',
+      'scripts/**/*',
+      'dist/**/*',
+      'docs/**/*',
+      'index.js'
+    ]
+  },
+  {
+    rules: {
+      "@typescript-eslint/no-non-null-assertion": "off",
+      "@typescript-eslint/class-methods-use-this": "off",
+      "@typescript-eslint/max-params": "off"
+    }
+  }
+]

package.json

@@ -65,6 +65,7 @@
     "@rollup/plugin-replace": "^5.0.5",
     "@rollup/plugin-terser": "^0.4.4",
     "@rollup/plugin-typescript": "^11.1.6",
+    "@rollup/pluginutils": "^5.1.0",
     "@shikijs/vitepress-twoslash": "^1.4.0",
     "@stackblitz/sdk": "^1.9.0",
     "@types/node": "^20.12.7",
@@ -73,19 +74,16 @@
     "cross-env": "^7.0.3",
     "dts-bundle-generator": "^9.5.1",
     "eslint": "^8.57.0",
-    "eslint-config-love": "^47.0.0",
-    "eslint-plugin-import": "^2.29.1",
-    "eslint-plugin-n": "^16.6.2",
-    "eslint-plugin-promise": "^6.1.1",
+    "eslint-config-love": "^64.0.0",
     "fs-extra": "^11.2.0",
     "gh-pages": "^6.1.1",
     "husky": "^8.0.3",
     "resize-observer-polyfill": "^1.5.1",
-    "rollup": "^4.16.4",
+    "rollup": "^4.21.3",
     "rollup-plugin-filesize": "^10.0.0",
     "rollup-plugin-progress": "^1.1.2",
     "tslib": "^2.6.2",
-    "typescript": "^4.9.5",
+    "typescript": "^5.5.4",
     "vitepress": "^1.3.4"
   }
 }

scripts/config.js

@@ -1,12 +1,12 @@
 import child_process from 'child_process'
 
 import { nodeResolve } from '@rollup/plugin-node-resolve'
-import eslint from '@rollup/plugin-eslint'
 import replace from '@rollup/plugin-replace'
 import typescript from '@rollup/plugin-typescript'
 import terser from '@rollup/plugin-terser'
 import fileSize from 'rollup-plugin-filesize'
 import progress from 'rollup-plugin-progress'
+import eslint from './eslint.js'
 
 import { resolvePath, getVersion } from './utils.js' 
 

scripts/eslint.js

@@ -0,0 +1,58 @@
+import { resolve, relative, sep } from 'path';
+import { createFilter } from '@rollup/pluginutils';
+import { loadESLint } from 'eslint';
+
+function normalizePath(id) {
+    return relative(process.cwd(), id).split(sep).join('/');
+}
+async function eslint(options = {}) {
+    if (typeof options === 'string') {
+        const configFile = resolve(process.cwd(), options);
+        options = require(configFile);
+        options.useEslintrc = true;
+    }
+    const { include, exclude = /node_modules/, throwOnWarning = false, throwOnError = false, formatter = 'stylish', ...eslintOptions } = options;
+    
+    const ESLint = await loadESLint({ useFlatConfig: true })
+    
+    const eslintInstance = new ESLint(eslintOptions);
+    const filter = createFilter(include, exclude);
+    return {
+        name: 'eslint',
+        async transform(_, id) {
+            const file = normalizePath(id);
+            if (!filter(id) || (await eslintInstance.isPathIgnored(file))) {
+                return null;
+            }
+            const results = await eslintInstance.lintFiles(file);
+            const [result] = results;
+            if (eslintOptions.fix) {
+                await ESLint.outputFixes(results);
+            }
+            if (result.warningCount === 0 && result.errorCount === 0) {
+                return null;
+            }
+            const eslintFormatter = typeof formatter === 'string'
+                ? await eslintInstance.loadFormatter(formatter)
+                : { format: formatter };
+            const output = await eslintFormatter.format(results);
+            if (output) {
+                // eslint-disable-next-line no-console
+                console.log(output);
+            }
+            const errorMessages = [];
+            if (result.warningCount > 0 && throwOnWarning) {
+                errorMessages.push(`${result.warningCount} warning${result.warningCount > 1 ? 's' : ''}`);
+            }
+            if (result.errorCount > 0 && throwOnError) {
+                errorMessages.push(`${result.errorCount} error${result.errorCount > 1 ? 's' : ''}`);
+            }
+            if (errorMessages.length > 0) {
+                throw new Error(`Found ${errorMessages.join(' and ')} in ${relative('.', result.filePath)}`);
+            }
+            return null;
+        }
+    };
+}
+
+export { eslint as default };

scripts/utils.js

@@ -1,4 +1,3 @@
-
 import path from 'path'
 import fs from 'fs'
 

src/Chart.ts

@@ -16,14 +16,14 @@ import type Nullable from './common/Nullable'
 import type DeepPartial from './common/DeepPartial'
 import type Bounding from './common/Bounding'
 import { createDefaultBounding } from './common/Bounding'
-import { type KLineData } from './common/Data'
+import type { KLineData } from './common/Data'
 import type Coordinate from './common/Coordinate'
 import type Point from './common/Point'
 import { UpdateLevel } from './common/Updater'
-import { type Styles } from './common/Styles'
+import type { Styles } from './common/Styles'
 import type Crosshair from './common/Crosshair'
 import { ActionType, type ActionCallback } from './common/Action'
-import { type LoadDataCallback } from './common/LoadDataCallback'
+import type { LoadDataCallback } from './common/LoadDataCallback'
 import type Precision from './common/Precision'
 import type VisibleRange from './common/VisibleRange'
 import { type CustomApi, LayoutChildType, type Options } from './Options'
@@ -51,13 +51,13 @@ import { type PaneOptions, PanePosition, PANE_DEFAULT_HEIGHT, PaneIdConstants }
 import type AxisImp from './component/Axis'
 import { AxisPosition, type Axis } from './component/Axis'
 
-import { type IndicatorFilter, type Indicator, type IndicatorCreate } from './component/Indicator'
-import { type OverlayFilter, type Overlay, type OverlayCreate } from './component/Overlay'
+import type { IndicatorFilter, Indicator, IndicatorCreate } from './component/Indicator'
+import type { OverlayFilter, Overlay, OverlayCreate } from './component/Overlay'
 
 import { getIndicatorClass } from './extension/indicator/index'
 
 import Event from './Event'
-import { type YAxis } from './component/YAxis'
+import type { YAxis } from './component/YAxis'
 
 export enum DomPosition {
   Root = 'root',
@@ -119,7 +119,7 @@ export interface Chart {
   zoomAtTimestamp: (scale: number, timestamp: number, animationDuration?: number) => void
   convertToPixel: (points: Partial<Point> | Array<Partial<Point>>, finder: ConvertFinder) => Partial<Coordinate> | Array<Partial<Coordinate>>
   convertFromPixel: (coordinates: Array<Partial<Coordinate>>, finder: ConvertFinder) => Partial<Point> | Array<Partial<Point>>
-  executeAction: (type: ActionType, data: any) => void
+  executeAction: (type: ActionType, data: Crosshair) => void
   subscribeAction: (type: ActionType, callback: ActionCallback) => void
   unsubscribeAction: (type: ActionType, callback?: ActionCallback) => void
   getConvertPictureUrl: (includeOverlay?: boolean, type?: string, backgroundColor?: string) => string
@@ -205,7 +205,7 @@ export default class ChartImp implements Chart {
         case LayoutChildType.Indicator: {
           const content = child.content ?? []
           if (content.length > 0) {
-            let paneId: Nullable<string>
+            let paneId: Nullable<string> = null
             content.forEach(v => {
               if (isValid(paneId)) {
                 this.createIndicator(v, true, { id: paneId })
@@ -261,7 +261,7 @@ export default class ChartImp implements Chart {
     if (!isValid(pane)) {
       pane = new DrawPaneClass(this._chartContainer, null, this, id, options ?? {})
     }
-    let newIndex: number
+    let newIndex = 0
     if (isNumber(index)) {
       this._drawPanes.splice(index, 0, pane)
       newIndex = index
@@ -389,7 +389,7 @@ export default class ChartImp implements Chart {
     const leftYAxisBounding = { width: leftYAxisWidth }
     const rightYAxisBounding = { width: rightYAxisWidth }
     const separatorFill = styles.separator.fill
-    let separatorBounding: Partial<Bounding>
+    let separatorBounding: Partial<Bounding> = {}
     if (!separatorFill) {
       separatorBounding = mainBounding
     } else {
@@ -781,7 +781,7 @@ export default class ChartImp implements Chart {
       build({ name: value })
     } else if (isArray<Array<string | OverlayCreate>>(value)) {
       (value as Array<string | OverlayCreate>).forEach(v => {
-        let overlay: OverlayCreate
+        let overlay: Nullable<OverlayCreate> = null
         if (isString(v)) {
           overlay = { name: v }
         } else {
@@ -959,7 +959,7 @@ export default class ChartImp implements Chart {
     return isArray(coordinates) ? points : (points[0] ?? {})
   }
 
-  executeAction (type: ActionType, data: any): void {
+  executeAction (type: ActionType, data: Crosshair): void {
     switch (type) {
       case ActionType.OnCrosshairChange: {
         const crosshair: Crosshair = { ...data }

src/Event.ts

@@ -19,7 +19,7 @@ import { UpdateLevel } from './common/Updater'
 import type Crosshair from './common/Crosshair'
 import { requestAnimationFrame, cancelAnimationFrame } from './common/utils/compatible'
 
-import { type AxisRange } from './component/Axis'
+import type { AxisRange } from './component/Axis'
 import type YAxis from './component/YAxis'
 import type XAxis from './component/XAxis'
 
@@ -243,7 +243,7 @@ export default class Event implements EventHandler {
             const yAxis = (pane as DrawPane<YAxis>).getAxisComponent()
             if (this._prevYAxisRange !== null && !yAxis.getAutoCalcTickFlag() && yAxis.scrollZoomEnabled) {
               const { from, to, range } = this._prevYAxisRange
-              let distance: number
+              let distance = 0
               if (yAxis.reverse) {
                 distance = this._startScrollCoordinate.y - event.y
               } else {
@@ -332,7 +332,7 @@ export default class Event implements EventHandler {
 
   mouseUpEvent (e: MouseTouchEvent): boolean {
     const { widget } = this._findWidgetByEvent(e)
-    let consumed: boolean = false
+    let consumed = false
     if (widget !== null) {
       const event = this._makeWidgetEvent(e, widget)
       const name = widget.getName()
@@ -370,7 +370,7 @@ export default class Event implements EventHandler {
 
   mouseRightClickEvent (e: MouseTouchEvent): boolean {
     const { widget } = this._findWidgetByEvent(e)
-    let consumed: boolean = false
+    let consumed = false
     if (widget !== null) {
       const event = this._makeWidgetEvent(e, widget)
       const name = widget.getName()

src/Options.ts

@@ -13,11 +13,11 @@
  */
 
 import type DeepPartial from './common/DeepPartial'
-import { type Styles } from './common/Styles'
+import type { Styles } from './common/Styles'
 import { formatDateToString, formatBigNumber } from './common/utils/format'
 
-import { type IndicatorCreate } from './component/Indicator'
-import { type PaneOptions } from './pane/types'
+import type { IndicatorCreate } from './component/Indicator'
+import type { PaneOptions } from './pane/types'
 
 export enum FormatDateType {
   Tooltip,

src/common/Action.ts

@@ -14,7 +14,7 @@
 
 import { isFunction } from './utils/typeChecks'
 
-export type ActionCallback = (data?: any) => void
+export type ActionCallback = (data?: unknown) => void
 
 export enum ActionType {
   OnZoom = 'onZoom',
@@ -47,7 +47,7 @@ export default class Delegate {
     }
   }
 
-  execute (data?: any): void {
+  execute (data?: unknown): void {
     this._callbacks.forEach(callback => {
       callback(data)
     })

src/common/Canvas.ts

@@ -79,6 +79,7 @@ export default class Canvas {
         this._resizeObserver.observe(this._element, { box: 'device-pixel-content-box' })
       } else {
         this._mediaQueryList = window.matchMedia(`(resolution: ${getPixelRatio(this._element)}dppx)`)
+        // eslint-disable-next-line @typescript-eslint/no-deprecated
         this._mediaQueryList.addListener(this._mediaQueryListener)
       }
     }).catch(_ => false)
@@ -136,6 +137,7 @@ export default class Canvas {
 
   destroy (): void {
     this._resizeObserver?.unobserve(this._element)
+    // eslint-disable-next-line @typescript-eslint/no-deprecated
     this._mediaQueryList?.removeListener(this._mediaQueryListener)
   }
 }

src/common/Crosshair.ts

@@ -13,7 +13,7 @@
  */
 
 import type Coordinate from './Coordinate'
-import { type KLineData } from './Data'
+import type { KLineData } from './Data'
 
 export default interface Crosshair extends Partial<Coordinate> {
   paneId?: string

src/common/Data.ts

@@ -22,7 +22,7 @@ export interface KLineData {
   close: number
   volume?: number
   turnover?: number
-  [key: string]: any
+  [key: string]: unknown
 }
 
 export interface VisibleData {

src/common/Eventful.ts

@@ -14,7 +14,7 @@
 
 import { isValid } from './utils/typeChecks'
 
-import { type EventName, type MouseTouchEvent, type MouseTouchEventCallback } from './SyntheticEvent'
+import type { EventName, MouseTouchEvent, MouseTouchEventCallback } from './SyntheticEvent'
 
 export interface EventDispatcher {
   dispatchEvent: (name: EventName, event: MouseTouchEvent, other?: number) => boolean

src/common/LoadDataCallback.ts

@@ -13,7 +13,7 @@
  */
 
 import type Nullable from './Nullable'
-import { type KLineData } from './Data'
+import type { KLineData } from './Data'
 
 export enum LoadDataType {
   Init = 'init',

src/common/Styles.ts

@@ -13,7 +13,7 @@
  */
 
 import type Nullable from './Nullable'
-import { type KLineData } from './Data'
+import type { KLineData } from './Data'
 
 export interface Margin {
   marginLeft: number
@@ -272,7 +272,7 @@ export interface IndicatorStyle {
   circles: IndicatorPolygonStyle[]
   lastValueMark: IndicatorLastValueMarkStyle
   tooltip: IndicatorTooltipStyle
-  [key: string]: any
+  [key: string]: unknown
 }
 
 export type AxisLineStyle = Omit<StateLineStyle, 'style' | 'dashedValue'>
@@ -325,7 +325,7 @@ export interface OverlayStyle {
   circle: PolygonStyle
   arc: LineStyle
   text: TextStyle
-  [key: string]: any
+  [key: string]: unknown
 }
 
 export interface SeparatorStyle {

src/common/SyntheticEvent.ts

@@ -82,13 +82,17 @@ export interface EventOptions {
 // so we do not need to have it as variables
 const enum Delay {
   ResetClick = 500,
+  // eslint-disable-next-line @typescript-eslint/no-duplicate-enum-values
   LongTap = 500,
+  // eslint-disable-next-line @typescript-eslint/no-duplicate-enum-values
   PreventFiresTouchEvents = 500,
 }
 
 const enum ManhattanDistance {
   CancelClick = 5,
+  // eslint-disable-next-line @typescript-eslint/no-duplicate-enum-values
   CancelTap = 5,
+  // eslint-disable-next-line @typescript-eslint/no-duplicate-enum-values
   DoubleClick = 5,
   DoubleTap = 30,
 }
@@ -116,24 +120,24 @@ export default class SyntheticEvent {
 
   private readonly _options: EventOptions
 
-  private _clickCount: number = 0
+  private _clickCount = 0
   private _clickTimeoutId: Nullable<TimerId> = null
   private _clickCoordinate: Coordinate = { x: Number.NEGATIVE_INFINITY, y: Number.POSITIVE_INFINITY }
 
-  private _tapCount: number = 0
+  private _tapCount = 0
   private _tapTimeoutId: Nullable<TimerId> = null
   private _tapCoordinate: Coordinate = { x: Number.NEGATIVE_INFINITY, y: Number.POSITIVE_INFINITY }
 
   private _longTapTimeoutId: Nullable<TimerId> = null
-  private _longTapActive: boolean = false
+  private _longTapActive = false
 
   private _mouseMoveStartCoordinate: Nullable<Coordinate> = null
 
   private _touchMoveStartCoordinate: Nullable<Coordinate> = null
-  private _touchMoveExceededManhattanDistance: boolean = false
+  private _touchMoveExceededManhattanDistance = false
 
-  private _cancelClick: boolean = false
-  private _cancelTap: boolean = false
+  private _cancelClick = false
+  private _cancelTap = false
 
   private _unsubscribeOutsideMouseEvents: Nullable<() => void> = null
   private _unsubscribeOutsideTouchEvents: Nullable<() => void> = null
@@ -149,13 +153,13 @@ export default class SyntheticEvent {
   private _unsubscribeRootTouchEvents: Nullable<() => void> = null
 
   private _startPinchMiddleCoordinate: Nullable<Coordinate> = null
-  private _startPinchDistance: number = 0
-  private _pinchPrevented: boolean = false
-  private _preventTouchDragProcess: boolean = false
+  private _startPinchDistance = 0
+  private _pinchPrevented = false
+  private _preventTouchDragProcess = false
 
-  private _mousePressed: boolean = false
+  private _mousePressed = false
 
-  private _lastTouchEventTimeStamp: number = 0
+  private _lastTouchEventTimeStamp = 0
 
   // for touchstart/touchmove/touchend events we handle only first touch
   // i.e. we don't support several active touches at the same time (except pinch event)
@@ -163,7 +167,7 @@ export default class SyntheticEvent {
 
   // accept all mouse leave events if it's not an iOS device
   // see _mouseEnterHandler, _mouseMoveHandler, _mouseLeaveHandler
-  private _acceptMouseLeave: boolean = !isIOS()
+  private _acceptMouseLeave = !isIOS()
 
   constructor (
     target: HTMLElement,
@@ -731,6 +735,7 @@ export default class SyntheticEvent {
     // it treats a touchstart and the following touchmove events as cancelable=false,
     // so we can't prevent them (as soon we subscribe on touchmove inside touchstart's handler).
     // And we'll get scroll of the page along with chart's one instead of only chart's scroll.
+    // eslint-disable-next-line @typescript-eslint/no-empty-function
     this._target.addEventListener('touchmove', () => {}, { passive: false })
   }
 

src/common/utils/canvas.ts

@@ -12,9 +12,10 @@
  * limitations under the License.
  */
 
+import type Nullable from '../Nullable'
 import { isValid } from './typeChecks'
 
-let measureCtx: CanvasRenderingContext2D
+let measureCtx: Nullable<CanvasRenderingContext2D> = null
 
 /**
  * Get pixel ratio

src/common/utils/compatible.ts

@@ -16,7 +16,7 @@ import { isFunction } from './typeChecks'
 
 export const DEFAULT_REQUEST_ID = -1
 
-export function requestAnimationFrame (fn: (params: any) => any): number {
+export function requestAnimationFrame (fn: (params: unknown) => unknown): number {
   if (isFunction(window.requestAnimationFrame)) {
     return window.requestAnimationFrame(fn)
   }

src/common/utils/format.ts

@@ -36,12 +36,12 @@ const rePropName = RegExp(
 export function formatValue (data: unknown, key: string, defaultValue?: unknown): unknown {
   if (isValid(data)) {
     const path: string[] = []
-    key.replace(rePropName, (subString: string, ...args: any[]) => {
+    key.replace(rePropName, (subString: string, ...args: unknown[]) => {
       let k = subString
       if (isValid(args[1])) {
-        k = args[2].replace(reEscapeChar, '$1')
+        k = (args[2] as string).replace(reEscapeChar, '$1')
       } else if (isValid(args[0])) {
-        k = args[0].trim()
+        k = (args[0] as string).trim()
       }
       path.push(k)
       return ''

src/common/utils/number.ts

@@ -19,7 +19,7 @@
  * @param targetValue
  * @return {number}
  */
-export function binarySearchNearest<T> (dataList: T[], valueKey: keyof T, targetValue: any): number {
+export function binarySearchNearest<T> (dataList: T[], valueKey: keyof T, targetValue: T[keyof T]): number {
   let left = 0
   let right = 0
   for (right = dataList.length - 1; left !== right;) {

src/common/utils/performance.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-export function throttle (func: (...args: any[]) => any, wait?: number): () => void {
+export function throttle (func: (...args: unknown[]) => unknown, wait?: number): () => void {
   let previous = 0
   return function () {
     const now = Date.now()

src/common/utils/platform.ts

@@ -23,5 +23,6 @@ export function isIOS (): boolean {
   if (typeof window === 'undefined') {
     return false
   }
+  // eslint-disable-next-line @typescript-eslint/no-deprecated
   return /iPhone|iPad|iPod/.test(window.navigator.platform)
 }

src/common/utils/typeChecks.ts

@@ -12,6 +12,7 @@
  * limitations under the License.
  */
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 export function merge (target: any, source: any): void {
   if ((!isObject(target) && !isObject(source))) {
     return
@@ -39,7 +40,8 @@ export function clone<T> (target: T): T {
     return target
   }
 
-  let copy
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  let copy: any = null
   if (isArray(target)) {
     copy = []
   } else {
@@ -58,19 +60,19 @@ export function clone<T> (target: T): T {
   return copy
 }
 
-export function isArray<T = any> (value: any): value is T[] {
+export function isArray<T = unknown> (value: unknown): value is T[] {
   return Object.prototype.toString.call(value) === '[object Array]'
 }
 
-export function isFunction<T = (...args: any) => any> (value: any): value is T {
+export function isFunction<T = (...args: unknown[]) => unknown> (value: unknown): value is T {
   return typeof value === 'function'
 }
 
-export function isObject (value: any): value is object {
+export function isObject (value: unknown): value is object {
   return (typeof value === 'object') && isValid(value)
 }
 
-export function isNumber (value: any): value is number {
+export function isNumber (value: unknown): value is number {
   return typeof value === 'number' && !Number.isNaN(value)
 }
 
@@ -78,10 +80,10 @@ export function isValid<T> (value: T | null | undefined): value is T {
   return value !== null && value !== undefined
 }
 
-export function isBoolean (value: any): value is boolean {
+export function isBoolean (value: unknown): value is boolean {
   return typeof value === 'boolean'
 }
 
-export function isString (value: any): value is string {
+export function isString (value: unknown): value is string {
   return typeof value === 'string'
 }

src/component/Axis.ts

@@ -17,8 +17,8 @@ import type VisibleRange from '../common/VisibleRange'
 import type DrawPane from '../pane/DrawPane'
 
 import type Bounding from '../common/Bounding'
-import { type KLineData } from '../common/Data'
-import { type Indicator } from './Indicator'
+import type { KLineData } from '../common/Data'
+import type { Indicator } from './Indicator'
 
 export interface AxisTick {
   coord: number

src/component/Figure.ts

@@ -15,11 +15,11 @@
 import type Coordinate from '../common/Coordinate'
 
 import Eventful from '../common/Eventful'
-import { type MouseTouchEvent } from '../common/SyntheticEvent'
+import type { MouseTouchEvent } from '../common/SyntheticEvent'
 
 export const DEVIATION = 2
 
-export interface Figure<A = any, S = any> {
+export interface Figure<A = unknown, S = unknown> {
   name: string
   attrs: A
   styles: S
@@ -27,19 +27,19 @@ export interface Figure<A = any, S = any> {
   checkEventOn: (coordinate: Coordinate, attrs: A, styles: S) => boolean
 }
 
-export type FigureTemplate<A = any, S = any> = Pick<Figure<A, S>, 'name' | 'draw' | 'checkEventOn'>
+export type FigureTemplate<A = unknown, S = unknown> = Pick<Figure<A, S>, 'name' | 'draw' | 'checkEventOn'>
 
-export type FigureCreate<A = any, S = any> = Pick<Figure<A, S>, 'name' | 'attrs' | 'styles'>
+export type FigureCreate<A = unknown, S = unknown> = Pick<Figure<A, S>, 'name' | 'attrs' | 'styles'>
 
-export type FigureInnerConstructor<A = any, S = any> = new (figure: FigureCreate<A, S>) => FigureImp<A, S>
+export type FigureInnerConstructor<A = unknown, S = unknown> = new (figure: FigureCreate<A, S>) => FigureImp<A, S>
 
-export type FigureConstructor<A = any, S = any> = new (figure: FigureCreate<A, S>) => ({ draw: (ctx: CanvasRenderingContext2D) => void })
+export type FigureConstructor<A = unknown, S = unknown> = new (figure: FigureCreate<A, S>) => ({ draw: (ctx: CanvasRenderingContext2D) => void })
 
-export default abstract class FigureImp<A = any, S = any> extends Eventful implements Omit<Figure<A, S>, 'name' | 'draw' | 'checkEventOn'> {
+export default abstract class FigureImp<A = unknown, S = unknown> extends Eventful implements Omit<Figure<A, S>, 'name' | 'draw' | 'checkEventOn'> {
   attrs: A
   styles: S
 
-  constructor (figure: FigureCreate) {
+  constructor (figure: FigureCreate<A, S>) {
     super()
     this.attrs = figure.attrs
     this.styles = figure.styles

src/component/Indicator.ts

@@ -14,23 +14,23 @@
 
 import type Nullable from '../common/Nullable'
 import type ExcludePickPartial from '../common/ExcludePickPartial'
-import { type KLineData } from '../common/Data'
+import type { KLineData } from '../common/Data'
 import type Bounding from '../common/Bounding'
 import type VisibleRange from '../common/VisibleRange'
 import type BarSpace from '../common/BarSpace'
 import type Crosshair from '../common/Crosshair'
-import { type IndicatorStyle, type IndicatorPolygonStyle, type SmoothLineStyle, type RectStyle, type TextStyle, type TooltipIconStyle, type LineStyle, type LineType, type PolygonType, type TooltipLegend } from '../common/Styles'
+import type { IndicatorStyle, IndicatorPolygonStyle, SmoothLineStyle, RectStyle, TextStyle, TooltipIconStyle, LineStyle, LineType, TooltipLegend } from '../common/Styles'
 import { isNumber, isValid, merge, isBoolean, isString, clone, isFunction } from '../common/utils/typeChecks'
 
-import { type XAxis } from './XAxis'
-import { type YAxis } from './YAxis'
+import type { XAxis } from './XAxis'
+import type { YAxis } from './YAxis'
 
 import { formatValue } from '../common/utils/format'
 
-import { type ArcAttrs } from '../extension/figure/arc'
-import { type RectAttrs } from '../extension/figure/rect'
-import { type TextAttrs } from '../extension/figure/text'
-import { type LoadDataType } from '../common/LoadDataCallback'
+import type { ArcAttrs } from '../extension/figure/arc'
+import type { RectAttrs } from '../extension/figure/rect'
+import type { TextAttrs } from '../extension/figure/text'
+import type { LoadDataType } from '../common/LoadDataCallback'
 
 export enum IndicatorSeries {
   Normal = 'normal',
@@ -38,9 +38,9 @@ export enum IndicatorSeries {
   Volume = 'volume'
 }
 
-export type IndicatorFigureStyle = Partial<Omit<SmoothLineStyle, 'style'>> & Partial<Omit<RectStyle, 'style'>> & Partial<TextStyle> & Partial<{ style: LineType[keyof LineType] | PolygonType[keyof PolygonType] }> & Record<string, any>
+export type IndicatorFigureStyle = Partial<Omit<SmoothLineStyle, 'style'>> & Partial<Omit<RectStyle, 'style'>> & Partial<TextStyle> & Partial<{ style: LineType[keyof LineType]   }> & Record<string, unknown>
 
-export type IndicatorFigureAttrs = Partial<ArcAttrs> & Partial<LineStyle> & Partial<RectAttrs> & Partial<TextAttrs> & Record<string, any>
+export type IndicatorFigureAttrs = Partial<ArcAttrs> & Partial<LineStyle> & Partial<RectAttrs> & Partial<TextAttrs> & Record<string, unknown>
 
 export interface IndicatorFigureCallbackBrother<PCN> {
   prev: PCN
@@ -71,7 +71,7 @@ export type IndicatorFigureStylesCallbackData<D> = IndicatorFigureCallbackBrothe
 export type IndicatorFigureAttrsCallback<D> = (params: IndicatorFigureAttrsCallbackParams<D>) => IndicatorFigureAttrs
 export type IndicatorFigureStylesCallback<D> = (data: IndicatorFigureStylesCallbackData<D>, indicator: Indicator<D>, defaultStyles: IndicatorStyle) => IndicatorFigureStyle
 
-export interface IndicatorFigure<D = any> {
+export interface IndicatorFigure<D = unknown> {
   key: string
   title?: string
   type?: string
@@ -80,7 +80,7 @@ export interface IndicatorFigure<D = any> {
   styles?: IndicatorFigureStylesCallback<D>
 }
 
-export type IndicatorRegenerateFiguresCallback<D> = (calcParams: any[]) => Array<IndicatorFigure<D>>
+export type IndicatorRegenerateFiguresCallback<D> = (calcParams: unknown[]) => Array<IndicatorFigure<D>>
 
 export interface IndicatorTooltipData {
   name: string
@@ -131,7 +131,7 @@ export interface IndicatorOnDataStatusChangeParams<D> {
 }
 export type IndicatorOnDataStatusChangeCallback<D> = (params: IndicatorOnDataStatusChangeParams<D>) => void
 
-export interface Indicator<D = any> {
+export interface Indicator<D = unknown> {
   /**
    * Indicator name
    */
@@ -150,7 +150,7 @@ export interface Indicator<D = any> {
   /**
    * Calculation parameters
    */
-  calcParams: any[]
+  calcParams: unknown[]
 
   /**
    * Whether ohlc column is required
@@ -175,7 +175,7 @@ export interface Indicator<D = any> {
   /**
    * Extend data
    */
-  extendData: any
+  extendData: unknown
 
   /**
    * Indicator series
@@ -238,17 +238,18 @@ export interface Indicator<D = any> {
   result: D[]
 }
 
-export type IndicatorTemplate<D = any> = ExcludePickPartial<Omit<Indicator<D>, 'result'>, 'name' | 'calc'>
+export type IndicatorTemplate<D = unknown> = ExcludePickPartial<Omit<Indicator<D>, 'result'>, 'name' | 'calc'>
 
-export type IndicatorCreate<D = any> = ExcludePickPartial<Omit<Indicator<D>, 'result'>, 'name'> & { paneId?: string }
+export type IndicatorCreate<D = unknown> = ExcludePickPartial<Omit<Indicator<D>, 'result'>, 'name'> & { paneId?: string }
 
 export type IndicatorFilter = Partial<Pick<Indicator, 'name'>> & { paneId?: string }
 
-export type IndicatorConstructor<D = any> = new () => IndicatorImp<D>
+export type IndicatorConstructor<D = unknown> = new () => IndicatorImp<D>
 
 export type EachFigureCallback<D> = (figure: IndicatorFigure<D>, figureStyles: IndicatorFigureStyle, index: number) => void
 
-export function eachFigures<D = any> (
+// eslint-disable-next-line @typescript-eslint/max-params
+export function eachFigures<D = unknown> (
   kLineDataList: KLineData[],
   indicator: Indicator<D>,
   dataIndex: number,
@@ -272,6 +273,7 @@ export function eachFigures<D = any> (
   let barCount = 0
   let lineCount = 0
 
+  // eslint-disable-next-line @typescript-eslint/init-declarations
   let defaultFigureStyles
   let figureIndex = 0
   figures.forEach(figure => {
@@ -311,16 +313,16 @@ export function eachFigures<D = any> (
   })
 }
 
-export default class IndicatorImp<D = any> implements Indicator<D> {
+export default class IndicatorImp<D = unknown> implements Indicator<D> {
   name: string
   shortName: string
   precision = 4
-  calcParams: any[] = []
+  calcParams: unknown[] = []
   shouldOhlc = false
   shouldFormatBigNumber = false
   visible = true
   zLevel = 0
-  extendData: any
+  extendData: unknown
   series = IndicatorSeries.Normal
   figures: Array<IndicatorFigure<D>> = []
   minValue: Nullable<number> = null
@@ -358,7 +360,7 @@ export default class IndicatorImp<D = any> implements Indicator<D> {
   result: D[] = []
 
   private _prevIndicator: Indicator<D>
-  private _lockSeriesPrecision: boolean = false
+  private _lockSeriesPrecision = false
 
   constructor (indicator: IndicatorTemplate<D>) {
     this.override(indicator)
@@ -425,7 +427,7 @@ export default class IndicatorImp<D = any> implements Indicator<D> {
     }
   }
 
-  static extend<D = any> (template: IndicatorTemplate<D>): IndicatorConstructor<D> {
+  static extend<D = unknown> (template: IndicatorTemplate<D>): IndicatorConstructor<D> {
     class Custom extends IndicatorImp<D> {
       constructor () {
         super(template)

src/component/Overlay.ts

@@ -20,14 +20,14 @@ import type Coordinate from '../common/Coordinate'
 import type Bounding from '../common/Bounding'
 import type BarSpace from '../common/BarSpace'
 import type Precision from '../common/Precision'
-import { type OverlayStyle } from '../common/Styles'
-import { type MouseTouchEvent } from '../common/SyntheticEvent'
+import type { OverlayStyle } from '../common/Styles'
+import type { MouseTouchEvent } from '../common/SyntheticEvent'
 import { clone, isArray, isFunction, isNumber, isString, isValid, merge } from '../common/utils/typeChecks'
 
 import type TimeScaleStore from '../store/TimeScaleStore'
 
-import { type XAxis } from './XAxis'
-import { type YAxis } from './YAxis'
+import type { XAxis } from './XAxis'
+import type { YAxis } from './YAxis'
 
 export enum OverlayMode {
   Normal = 'normal',
@@ -62,8 +62,8 @@ export function getAllOverlayFigureIgnoreEventTypes (): OverlayFigureIgnoreEvent
 export interface OverlayFigure {
   key?: string
   type: string
-  attrs: any
-  styles?: any
+  attrs: unknown
+  styles?: unknown
   ignoreEvent?: boolean | OverlayFigureIgnoreEventType[]
 }
 
@@ -178,7 +178,7 @@ export interface Overlay {
   /**
    * Extended Data
    */
-  extendData: any
+  extendData: unknown
 
   /**
    * The style information and format are consistent with the overlay in the unified configuration
@@ -297,7 +297,7 @@ export const OVERLAY_FIGURE_KEY_PREFIX = 'overlay_figure_'
 
 export default class OverlayImp implements Overlay {
   id: string
-  groupId: string = ''
+  groupId = ''
   paneId: string
   name: string
   totalStep = 1
@@ -311,7 +311,7 @@ export default class OverlayImp implements Overlay {
   mode = OverlayMode.Normal
   modeSensitivity = 8
   points: Array<Partial<Point>> = []
-  extendData: any = null
+  extendData: unknown = null
   styles: Nullable<DeepPartial<OverlayStyle>> = null
   createPointFigures: Nullable<OverlayCreateFiguresCallback> = null
   createXAxisFigures: Nullable<OverlayCreateFiguresCallback> = null
@@ -370,7 +370,7 @@ export default class OverlayImp implements Overlay {
     }
 
     if (isArray(points) && points.length > 0) {
-      let repeatTotalStep: number
+      let repeatTotalStep = 0
       this.points = [...points]
       if (points.length >= this.totalStep - 1) {
         this.currentStep = OVERLAY_DRAW_STEP_FINISHED
@@ -481,11 +481,11 @@ export default class OverlayImp implements Overlay {
 
   eventPressedOtherMove (point: Partial<Point>, timeScaleStore: TimeScaleStore): void {
     if (this._prevPressedPoint !== null) {
-      let difDataIndex: number
+      let difDataIndex: Nullable<number> = null
       if (isNumber(point.dataIndex) && isNumber(this._prevPressedPoint.dataIndex)) {
         difDataIndex = point.dataIndex - this._prevPressedPoint.dataIndex
       }
-      let difValue: number
+      let difValue: Nullable<number> = null
       if (isNumber(point.value) && isNumber(this._prevPressedPoint.value)) {
         difValue = point.value - this._prevPressedPoint.value
       }

src/component/YAxis.ts

@@ -283,7 +283,7 @@ export default abstract class YAxisImp extends AxisImp implements YAxis {
       })
     }
     const textHeight = chartStore.getStyles().xAxis.tickText.size
-    let validY: number
+    let validY = NaN
     ticks.forEach(({ value }) => {
       let v = this.displayValueToText(+value, precision)
       const y = this.convertToPixel(

src/extension/figure/arc.ts

@@ -18,7 +18,7 @@ import { type LineStyle, LineType } from '../../common/Styles'
 
 import { type FigureTemplate, DEVIATION } from '../../component/Figure'
 
-import { type CircleAttrs } from './circle'
+import type { CircleAttrs } from './circle'
 
 export function checkCoordinateOnArc (coordinate: Coordinate, attrs: ArcAttrs | ArcAttrs[]): boolean {
   let arcs: ArcAttrs[] = []

src/extension/figure/circle.ts

@@ -17,7 +17,7 @@ import { type PolygonStyle, PolygonType, LineType } from '../../common/Styles'
 import { isString } from '../../common/utils/typeChecks'
 import { isTransparent } from '../../common/utils/color'
 
-import { type FigureTemplate } from '../../component/Figure'
+import type { FigureTemplate } from '../../component/Figure'
 
 export function checkCoordinateOnCircle (coordinate: Coordinate, attrs: CircleAttrs | CircleAttrs[]): boolean {
   let circles: CircleAttrs[] = []

src/extension/figure/index.ts

@@ -34,15 +34,15 @@ function getSupportedFigures (): string[] {
   return Object.keys(figures)
 }
 
-function registerFigure<A = any, S = any> (figure: FigureTemplate<A, S>): void {
+function registerFigure<A = unknown, S = unknown> (figure: FigureTemplate<A, S>): void {
   figures[figure.name] = FigureImp.extend(figure)
 }
 
-function getInnerFigureClass<A = any, S = any> (name: string): Nullable<FigureInnerConstructor<A, S>> {
+function getInnerFigureClass (name: string): Nullable<FigureInnerConstructor> {
   return figures[name] ?? null
 }
 
-function getFigureClass<A = any, S = any> (name: string): Nullable<FigureConstructor<A, S>> {
+function getFigureClass<A = unknown, S = unknown> (name: string): Nullable<FigureConstructor<A, S>> {
   return figures[name] ?? null
 }
 

src/extension/figure/polygon.ts

@@ -17,7 +17,7 @@ import { type PolygonStyle, PolygonType, LineType } from '../../common/Styles'
 import { isString } from '../../common/utils/typeChecks'
 import { isTransparent } from '../../common/utils/color'
 
-import { type FigureTemplate } from '../../component/Figure'
+import type { FigureTemplate } from '../../component/Figure'
 
 export function checkCoordinateOnPolygon (coordinate: Coordinate, attrs: PolygonAttrs | PolygonAttrs[]): boolean {
   let polygons: PolygonAttrs[] = []

src/extension/figure/text.ts

@@ -13,11 +13,11 @@
  */
 
 import type Coordinate from '../../common/Coordinate'
-import { type TextStyle } from '../../common/Styles'
+import type { TextStyle } from '../../common/Styles'
 
 import { createFont, calcTextWidth } from '../../common/utils/canvas'
 
-import { type FigureTemplate } from '../../component/Figure'
+import type { FigureTemplate } from '../../component/Figure'
 
 import { type RectAttrs, drawRect } from './rect'
 
@@ -26,7 +26,7 @@ export function getTextRect (attrs: TextAttrs, styles: Partial<TextStyle>): Rect
   const { x, y, text, align = 'left', baseline = 'top', width: w, height: h } = attrs
   const width = w ?? (paddingLeft + calcTextWidth(text, size, weight, family) + paddingRight)
   const height = h ?? (paddingTop + size + paddingBottom)
-  let startX: number
+  let startX = 0
   switch (align) {
     case 'left':
     case 'start': {
@@ -43,7 +43,7 @@ export function getTextRect (attrs: TextAttrs, styles: Partial<TextStyle>): Rect
       break
     }
   }
-  let startY: number
+  let startY = 0
   switch (baseline) {
     case 'top':
     case 'hanging': {

src/extension/i18n/en-US.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type Locales } from '../../Options'
+import type { Locales } from '../../Options'
 
 const enUS: Locales = {
   time: 'Time: ',

src/extension/i18n/index.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type Locales } from '../../Options'
+import type { Locales } from '../../Options'
 
 import zhCN from './zh-CN'
 import enUS from './en-US'

src/extension/i18n/zh-CN.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type Locales } from '../../Options'
+import type { Locales } from '../../Options'
 
 const zhCN: Locales = {
   time: '时间：',

src/extension/indicator/averagePrice.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
+import type { KLineData } from '../../common/Data'
 import { type IndicatorTemplate, IndicatorSeries } from '../../component/Indicator'
 
 interface Avp {

src/extension/indicator/awesomeOscillator.ts

@@ -12,11 +12,11 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
+import type { KLineData } from '../../common/Data'
 import { type IndicatorStyle, PolygonType } from '../../common/Styles'
 import { formatValue } from '../../common/utils/format'
 
-import { type Indicator, type IndicatorTemplate, type IndicatorFigureStylesCallbackData } from '../../component/Indicator'
+import type { Indicator, IndicatorTemplate, IndicatorFigureStylesCallbackData } from '../../component/Indicator'
 
 interface Ao {
   ao?: number
@@ -35,7 +35,7 @@ const awesomeOscillator: IndicatorTemplate<Ao> = {
       const { prev, current } = data
       const prevAo = prev.indicatorData?.ao ?? Number.MIN_SAFE_INTEGER
       const currentAo = current.indicatorData?.ao ?? Number.MIN_SAFE_INTEGER
-      let color: string
+      let color = ''
       if (currentAo > prevAo) {
         color = formatValue(indicator.styles, 'bars[0].upColor', (defaultStyles.bars)[0].upColor) as string
       } else {
@@ -46,8 +46,8 @@ const awesomeOscillator: IndicatorTemplate<Ao> = {
     }
   }],
   calc: (dataList: KLineData[], indicator: Indicator<Ao>) => {
-    const params = indicator.calcParams
-    const maxPeriod = Math.max(params[0] as number, params[1] as number)
+    const params = indicator.calcParams as number[]
+    const maxPeriod = Math.max(params[0], params[1])
     let shortSum = 0
     let longSum = 0
     let short = 0

src/extension/indicator/bias.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Bias {
   bias1?: number
@@ -34,13 +34,14 @@ const bias: IndicatorTemplate<Bias> = {
     { key: 'bias2', title: 'BIAS12: ', type: 'line' },
     { key: 'bias3', title: 'BIAS24: ', type: 'line' }
   ],
-  regenerateFigures: (params: any[]) => {
+  regenerateFigures: (params: unknown[]) => {
     return params.map((p: number, i: number) => {
       return { key: `bias${i + 1}`, title: `BIAS${p}: `, type: 'line' }
     })
   },
   calc: (dataList: KLineData[], indicator: Indicator<Bias>) => {
-    const { calcParams: params, figures } = indicator
+    const { calcParams, figures } = indicator
+    const params = calcParams as number[]
     const closeSums: number[] = []
     return dataList.map((kLineData: KLineData, i: number) => {
       const bias: Bias = {}

src/extension/indicator/bollingerBands.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
+import type { KLineData } from '../../common/Data'
 import { type Indicator, type IndicatorTemplate, IndicatorSeries } from '../../component/Indicator'
 
 interface Boll {
@@ -54,7 +54,7 @@ const bollingerBands: IndicatorTemplate<Boll> = {
     { key: 'dn', title: 'DN: ', type: 'line' }
   ],
   calc: (dataList: KLineData[], indicator: Indicator<Boll>) => {
-    const params = indicator.calcParams
+    const params = indicator.calcParams as number[]
     const p = params[0] - 1
     let closeSum = 0
     return dataList.map((kLineData: KLineData, i: number) => {

src/extension/indicator/brar.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Brar {
   br?: number
@@ -38,7 +38,7 @@ const brar: IndicatorTemplate<Brar> = {
     { key: 'ar', title: 'AR: ', type: 'line' }
   ],
   calc: (dataList: KLineData[], indicator: Indicator<Brar>) => {
-    const params = indicator.calcParams
+    const params = indicator.calcParams as number[]
     let hcy = 0
     let cyl = 0
     let ho = 0

src/extension/indicator/bullAndBearIndex.ts

@@ -11,7 +11,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { type KLineData } from '../../common/Data'
+import type { KLineData } from '../../common/Data'
 import { type Indicator, type IndicatorTemplate, IndicatorSeries } from '../../component/Indicator'
 
 interface Bbi {

src/extension/indicator/commodityChannelIndex.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Cci {
   cci?: number
@@ -35,7 +35,7 @@ const commodityChannelIndex: IndicatorTemplate<Cci> = {
     { key: 'cci', title: 'CCI: ', type: 'line' }
   ],
   calc: (dataList: KLineData[], indicator: Indicator<Cci>) => {
-    const params = indicator.calcParams
+    const params = indicator.calcParams as number[]
     const p = params[0] - 1
     let tpSum = 0
     const tpList: number[] = []

src/extension/indicator/currentRatio.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Cr {
   cr?: number

src/extension/indicator/differentOfMovingAverage.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Dma {
   dma?: number

src/extension/indicator/directionalMovementIndex.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Dmi {
   pdi?: number

src/extension/indicator/easeOfMovementValue.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Emv {
   emv?: number

src/extension/indicator/exponentialMovingAverage.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
+import type { KLineData } from '../../common/Data'
 import { type Indicator, type IndicatorTemplate, IndicatorSeries } from '../../component/Indicator'
 
 interface Ema {
@@ -36,7 +36,7 @@ const exponentialMovingAverage: IndicatorTemplate<Ema> = {
     { key: 'ema2', title: 'EMA12: ', type: 'line' },
     { key: 'ema3', title: 'EMA20: ', type: 'line' }
   ],
-  regenerateFigures: (params: any[]) => {
+  regenerateFigures: (params: unknown[]) => {
     return params.map((p: number, i: number) => {
       return { key: `ema${i + 1}`, title: `EMA${p}: `, type: 'line' }
     })

src/extension/indicator/momentum.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Mtm {
   mtm?: number

src/extension/indicator/movingAverage.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
+import type { KLineData } from '../../common/Data'
 import { type Indicator, type IndicatorTemplate, IndicatorSeries } from '../../component/Indicator'
 
 interface Ma {
@@ -38,7 +38,7 @@ const movingAverage: IndicatorTemplate<Ma> = {
     { key: 'ma30', title: 'MA30: ', type: 'line' },
     { key: 'ma60', title: 'MA60: ', type: 'line' }
   ],
-  regenerateFigures: (params: any[]) => {
+  regenerateFigures: (params: unknown[]) => {
     return params.map((p: number, i: number) => {
       return { key: `ma${i + 1}`, title: `MA${p}: `, type: 'line' }
     })

src/extension/indicator/movingAverageConvergenceDivergence.ts

@@ -12,12 +12,12 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
+import type { KLineData } from '../../common/Data'
 import { type IndicatorStyle, PolygonType } from '../../common/Styles'
 
 import { formatValue } from '../../common/utils/format'
 
-import { type Indicator, type IndicatorTemplate, type IndicatorFigureStylesCallbackData } from '../../component/Indicator'
+import type { Indicator, IndicatorTemplate, IndicatorFigureStylesCallbackData } from '../../component/Indicator'
 
 interface Macd {
   dif?: number
@@ -49,7 +49,7 @@ const movingAverageConvergenceDivergence: IndicatorTemplate<Macd> = {
         const { prev, current } = data
         const prevMacd = prev.indicatorData?.macd ?? Number.MIN_SAFE_INTEGER
         const currentMacd = current.indicatorData?.macd ?? Number.MIN_SAFE_INTEGER
-        let color: string
+        let color = ''
         if (currentMacd > 0) {
           color = formatValue(indicator.styles, 'bars[0].upColor', (defaultStyles.bars)[0].upColor) as string
         } else if (currentMacd < 0) {
@@ -65,8 +65,8 @@ const movingAverageConvergenceDivergence: IndicatorTemplate<Macd> = {
   calc: (dataList: KLineData[], indicator: Indicator<Macd>) => {
     const params = indicator.calcParams as number[]
     let closeSum = 0
-    let emaShort: number
-    let emaLong: number
+    let emaShort = 0
+    let emaLong = 0
     let dif = 0
     let difSum = 0
     let dea = 0

src/extension/indicator/onBalanceVolume.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Obv {
   obv?: number

src/extension/indicator/priceAndVolumeTrend.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { IndicatorTemplate } from '../../component/Indicator'
 
 interface Pvt {
   pvt?: number

src/extension/indicator/psychologicalLine.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Psy {
   psy?: number

src/extension/indicator/rateOfChange.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Roc {
   roc?: number

src/extension/indicator/relativeStrengthIndex.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Rsi {
   rsi1?: number
@@ -34,14 +34,15 @@ const relativeStrengthIndex: IndicatorTemplate<Rsi> = {
     { key: 'rsi2', title: 'RSI2: ', type: 'line' },
     { key: 'rsi3', title: 'RSI3: ', type: 'line' }
   ],
-  regenerateFigures: (params: any[]) => {
-    return params.map((_: any, index: number) => {
+  regenerateFigures: (params: unknown[]) => {
+    return params.map((_: unknown, index: number) => {
       const num = index + 1
       return { key: `rsi${num}`, title: `RSI${num}: `, type: 'line' }
     })
   },
   calc: (dataList: KLineData[], indicator: Indicator<Rsi>) => {
-    const { calcParams: params, figures } = indicator
+    const { calcParams, figures } = indicator
+    const params = calcParams as number[]
     const sumCloseAs: number[] = []
     const sumCloseBs: number[] = []
     return dataList.map((kLineData, i) => {

src/extension/indicator/simpleMovingAverage.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
+import type { KLineData } from '../../common/Data'
 import { type Indicator, type IndicatorTemplate, IndicatorSeries } from '../../component/Indicator'
 
 interface Sma {

src/extension/indicator/stoch.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 import { getMaxMin } from '../../common/utils/number'
 
@@ -41,7 +41,7 @@ const stoch: IndicatorTemplate<Kdj> = {
     { key: 'j', title: 'J: ', type: 'line' }
   ],
   calc: (dataList: KLineData[], indicator: Indicator<Kdj>) => {
-    const params = indicator.calcParams
+    const params = indicator.calcParams as number[]
     const result: Kdj[] = []
     dataList.forEach((kLineData: KLineData, i: number) => {
       const kdj: Kdj = {}

src/extension/indicator/stopAndReverse.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type IndicatorStyle } from '../../common/Styles'
+import type { KLineData } from '../../common/Data'
+import type { IndicatorStyle } from '../../common/Styles'
 import { formatValue } from '../../common/utils/format'
 
 import { type Indicator, type IndicatorTemplate, IndicatorSeries, type IndicatorFigureStylesCallbackData } from '../../component/Indicator'
@@ -47,7 +47,7 @@ const stopAndReverse: IndicatorTemplate<Sar> = {
     }
   ],
   calc: (dataList: KLineData[], indicator: Indicator<Sar>) => {
-    const params = indicator.calcParams
+    const params = indicator.calcParams as number[]
     const startAf = params[0] / 100
     const step = params[1] / 100
     const maxAf = params[2] / 100

src/extension/indicator/tripleExponentiallySmoothedAverage.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Trix {
   trix?: number
@@ -44,9 +44,9 @@ const tripleExponentiallySmoothedAverage: IndicatorTemplate<Trix> = {
   calc: (dataList: KLineData[], indicator: Indicator<Trix>) => {
     const params = indicator.calcParams as number[]
     let closeSum = 0
-    let ema1: number
-    let ema2: number
-    let oldTr: number
+    let ema1 = 0
+    let ema2 = 0
+    let oldTr = 0
     let ema1Sum = 0
     let ema2Sum = 0
     let trixSum = 0
@@ -70,7 +70,7 @@ const tripleExponentiallySmoothedAverage: IndicatorTemplate<Trix> = {
           }
           ema2Sum += ema2
           if (i >= params[0] * 3 - 3) {
-            let tr: number
+            let tr = 0
             let trixValue = 0
             if (i > params[0] * 3 - 3) {
               tr = (2 * ema2 + (params[0] - 1) * oldTr) / (params[0] + 1)

src/extension/indicator/volume.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type IndicatorStyle } from '../../common/Styles'
+import type { KLineData } from '../../common/Data'
+import type { IndicatorStyle } from '../../common/Styles'
 import { formatValue } from '../../common/utils/format'
 import { isValid } from '../../common/utils/typeChecks'
 
@@ -61,7 +61,7 @@ const volume: IndicatorTemplate<Vol> = {
     { key: 'ma3', title: 'MA20: ', type: 'line' },
     getVolumeFigure()
   ],
-  regenerateFigures: (params: any[]) => {
+  regenerateFigures: (params: unknown[]) => {
     const figures: Array<IndicatorFigure<Vol>> = params.map((p: number, i: number) => {
       return { key: `ma${i + 1}`, title: `MA${p}: `, type: 'line' }
     })
@@ -69,7 +69,8 @@ const volume: IndicatorTemplate<Vol> = {
     return figures
   },
   calc: (dataList: KLineData[], indicator: Indicator<Vol>) => {
-    const { calcParams: params, figures } = indicator
+    const { calcParams, figures } = indicator
+    const params = calcParams as number[]
     const volSums: number[] = []
     return dataList.map((kLineData: KLineData, i: number) => {
       const volume = kLineData.volume ?? 0

src/extension/indicator/volumeRatio.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 interface Vr {
   vr?: number

src/extension/indicator/williamsR.ts

@@ -12,8 +12,8 @@
  * limitations under the License.
  */
 
-import { type KLineData } from '../../common/Data'
-import { type Indicator, type IndicatorTemplate } from '../../component/Indicator'
+import type { KLineData } from '../../common/Data'
+import type { Indicator, IndicatorTemplate } from '../../component/Indicator'
 
 import { getMaxMin } from '../../common/utils/number'
 
@@ -36,13 +36,14 @@ const williamsR: IndicatorTemplate<Wr> = {
     { key: 'wr2', title: 'WR2: ', type: 'line' },
     { key: 'wr3', title: 'WR3: ', type: 'line' }
   ],
-  regenerateFigures: (params: any[]) => {
+  regenerateFigures: (params: unknown[]) => {
     return params.map((_, i: number) => {
       return { key: `wr${i + 1}`, title: `WR${i + 1}: `, type: 'line' }
     })
   },
   calc: (dataList: KLineData[], indicator: Indicator<Wr>) => {
-    const { calcParams: params, figures } = indicator
+    const { calcParams, figures } = indicator
+    const params = calcParams as number[]
     return dataList.map((kLineData, i) => {
       const wr: Wr = {}
       const close = kLineData.close

src/extension/overlay/fibonacciLine.ts

@@ -15,10 +15,10 @@
 import { formatThousands, formatFoldDecimal } from '../../common/utils/format'
 import { isNumber } from '../../common/utils/typeChecks'
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
-import { type LineAttrs } from '../figure/line'
-import { type TextAttrs } from '../figure/text'
+import type { LineAttrs } from '../figure/line'
+import type { TextAttrs } from '../figure/text'
 
 const fibonacciLine: OverlayTemplate = {
   name: 'fibonacciLine',

src/extension/overlay/horizontalRayLine.ts

@@ -13,7 +13,7 @@
  */
 
 import { isValid } from '../../common/utils/typeChecks'
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 const horizontalRayLine: OverlayTemplate = {
   name: 'horizontalRayLine',

src/extension/overlay/horizontalSegment.ts

@@ -12,9 +12,9 @@
  * limitations under the License.
  */
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
-import { type LineAttrs } from '../figure/line'
+import type { LineAttrs } from '../figure/line'
 
 const horizontalSegment: OverlayTemplate = {
   name: 'horizontalSegment',

src/extension/overlay/horizontalStraightLine.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 const horizontalStraightLine: OverlayTemplate = {
   name: 'horizontalStraightLine',

src/extension/overlay/parallelStraightLine.ts

@@ -15,7 +15,7 @@
 import type Coordinate from '../../common/Coordinate'
 import type Bounding from '../../common/Bounding'
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 import { type LineAttrs, getLinearSlopeIntercept } from '../figure/line'
 

src/extension/overlay/priceChannelLine.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 import { getParallelLines } from './parallelStraightLine'
 

src/extension/overlay/priceLine.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 import { formatThousands, formatFoldDecimal } from '../../common/utils/format'
 

src/extension/overlay/rayLine.ts

@@ -15,13 +15,13 @@
 import type Coordinate from '../../common/Coordinate'
 import type Bounding from '../../common/Bounding'
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 import { getLinearYFromCoordinates, type LineAttrs } from '../figure/line'
 
 export function getRayLine (coordinates: Coordinate[], bounding: Bounding): LineAttrs | LineAttrs[] {
   if (coordinates.length > 1) {
-    let coordinate: Coordinate
+    let coordinate = { x: 0, y: 0 }
     if (coordinates[0].x === coordinates[1].x && coordinates[0].y !== coordinates[1].y) {
       if (coordinates[0].y < coordinates[1].y) {
         coordinate = {

src/extension/overlay/segment.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 const segment: OverlayTemplate = {
   name: 'segment',

src/extension/overlay/simpleAnnotation.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 import { isFunction, isValid } from '../../common/utils/typeChecks'
 import { LineType } from '../../common/Styles'
 
@@ -23,12 +23,12 @@ const simpleAnnotation: OverlayTemplate = {
     line: { style: LineType.Dashed }
   },
   createPointFigures: ({ overlay, coordinates }) => {
-    let text
+    let text = ''
     if (isValid(overlay.extendData)) {
       if (!isFunction(overlay.extendData)) {
-        text = overlay.extendData ?? ''
+        text = (overlay.extendData ?? '') as string
       } else {
-        text = overlay.extendData(overlay)
+        text = (overlay.extendData(overlay)) as string
       }
     }
     const startX = coordinates[0].x

src/extension/overlay/simpleTag.ts

@@ -14,7 +14,7 @@
 
 import { formatPrecision } from '../../common/utils/format'
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 import { isFunction, isNumber, isValid } from '../../common/utils/typeChecks'
 
@@ -40,8 +40,8 @@ const simpleTag: OverlayTemplate = {
   },
   createYAxisFigures: ({ overlay, coordinates, bounding, yAxis, precision }) => {
     const isFromZero = yAxis?.isFromZero() ?? false
-    let textAlign: CanvasTextAlign
-    let x: number
+    let textAlign: CanvasTextAlign = 'left'
+    let x = 0
     if (isFromZero) {
       textAlign = 'left'
       x = 0
@@ -49,12 +49,12 @@ const simpleTag: OverlayTemplate = {
       textAlign = 'right'
       x = bounding.width
     }
-    let text
+    let text = ''
     if (isValid(overlay.extendData)) {
       if (!isFunction(overlay.extendData)) {
-        text = overlay.extendData ?? ''
+        text = (overlay.extendData ?? '') as string
       } else {
-        text = overlay.extendData(overlay)
+        text = overlay.extendData(overlay) as string
       }
     }
     if (!isValid(text) && isNumber(overlay.points[0].value)) {

src/extension/overlay/straightLine.ts

@@ -14,7 +14,7 @@
 
 import { getLinearYFromCoordinates } from '../figure/line'
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 const straightLine: OverlayTemplate = {
   name: 'straightLine',

src/extension/overlay/verticalRayLine.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 const verticalRayLine: OverlayTemplate = {
   name: 'verticalRayLine',

src/extension/overlay/verticalSegment.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 const verticalSegment: OverlayTemplate = {
   name: 'verticalSegment',

src/extension/overlay/verticalStraightLine.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type OverlayTemplate } from '../../component/Overlay'
+import type { OverlayTemplate } from '../../component/Overlay'
 
 const verticalStraightLine: OverlayTemplate = {
   name: 'verticalStraightLine',

src/extension/styles/dark.ts

@@ -13,7 +13,7 @@
  */
 
 import type DeepPartial from '../../common/DeepPartial'
-import { type Styles } from '../../common/Styles'
+import type { Styles } from '../../common/Styles'
 
 const dark: DeepPartial<Styles> = {
   grid: {

src/extension/styles/index.ts

@@ -14,7 +14,7 @@
 
 import type Nullable from '../../common/Nullable'
 import type DeepPartial from '../../common/DeepPartial'
-import { type Styles } from '../../common/Styles'
+import type { Styles } from '../../common/Styles'
 
 import light from './light'
 import dark from './dark'

src/extension/styles/light.ts

@@ -13,7 +13,7 @@
  */
 
 import type DeepPartial from '../../common/DeepPartial'
-import { type Styles } from '../../common/Styles'
+import type { Styles } from '../../common/Styles'
 
 const light: DeepPartial<Styles> = {
   grid: {

src/extension/x-axis/index.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type AxisTemplate } from '../../component/Axis'
+import type { AxisTemplate } from '../../component/Axis'
 import XAxisImp, { type XAxisConstructor } from '../../component/XAxis'
 
 import normal from './normal'

src/extension/x-axis/normal.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type AxisTemplate } from '../../component/Axis'
+import type { AxisTemplate } from '../../component/Axis'
 
 const defaultXAxis: AxisTemplate = {
   name: 'default'

src/extension/y-axis/index.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type AxisTemplate } from '../../component/Axis'
+import type { AxisTemplate } from '../../component/Axis'
 import YAxisImp, { type YAxisConstructor } from '../../component/YAxis'
 
 import normal from './normal'

src/extension/y-axis/logarithm.ts

@@ -13,7 +13,7 @@
  */
 
 import { log10, index10 } from '../../common/utils/number'
-import { type AxisTemplate } from '../../component/Axis'
+import type { AxisTemplate } from '../../component/Axis'
 
 const logarithm: AxisTemplate = {
   name: 'logarithm',

src/extension/y-axis/normal.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type AxisTemplate } from '../../component/Axis'
+import type { AxisTemplate } from '../../component/Axis'
 
 const normal: AxisTemplate = {
   name: 'normal'

src/extension/y-axis/percentage.ts

@@ -14,7 +14,7 @@
 
 import { formatPrecision } from '../../common/utils/format'
 import { isValid } from '../../common/utils/typeChecks'
-import { type AxisTemplate } from '../../component/Axis'
+import type { AxisTemplate } from '../../component/Axis'
 
 const percentage: AxisTemplate = {
   name: 'percentage',

src/index.ts

@@ -81,7 +81,7 @@ function version (): string {
  */
 function init (ds: HTMLElement | string, options?: Options): Nullable<Chart> {
   logTag()
-  let dom: Nullable<HTMLElement>
+  let dom: Nullable<HTMLElement> = null
   if (isString(ds)) {
     dom = document.getElementById(ds)
   } else {
@@ -109,11 +109,11 @@ function init (ds: HTMLElement | string, options?: Options): Nullable<Chart> {
  * @param dcs
  */
 function dispose (dcs: HTMLElement | Chart | string): void {
-  let id: Nullable<string>
+  let id: Nullable<string> = null
   if (dcs instanceof ChartImp) {
     id = dcs.id
   } else {
-    let dom: Nullable<HTMLElement>
+    let dom: Nullable<HTMLElement> = null
     if (isString(dcs)) {
       dom = document.getElementById(dcs)
     } else {

src/pane/CandlePane.ts

@@ -17,7 +17,7 @@ import CandleWidget from '../widget/CandleWidget'
 
 import type DrawPane from './DrawPane'
 import IndicatorPane from './IndicatorPane'
-import { type YAxis } from '../component/YAxis'
+import type { YAxis } from '../component/YAxis'
 
 export default class CandlePane extends IndicatorPane {
   override createMainWidget (container: HTMLElement): DrawWidget<DrawPane<YAxis>> {

src/pane/DrawPane.ts

@@ -14,7 +14,7 @@
 
 import type DeepRequired from '../common/DeepRequired'
 import type Nullable from '../common/Nullable'
-import { type UpdateLevel } from '../common/Updater'
+import type { UpdateLevel } from '../common/Updater'
 import type Bounding from '../common/Bounding'
 
 import { isValid, merge } from '../common/utils/typeChecks'
@@ -74,8 +74,8 @@ export default abstract class DrawPane<C extends Axis = Axis> extends Pane {
       name,
       ...this._options.axis
     })
-    let container: HTMLElement
-    let cursor: string
+    let container: Nullable<HTMLElement> = null
+    let cursor = 'default'
     if (this.getId() === PaneIdConstants.X_AXIS) {
       container = this.getMainWidget().getContainer()
       cursor = 'ew-resize'

src/pane/IndicatorPane.ts

@@ -18,7 +18,7 @@ import type DrawWidget from '../widget/DrawWidget'
 import IndicatorWidget from '../widget/IndicatorWidget'
 import YAxisWidget from '../widget/YAxisWidget'
 
-import { type YAxis } from '../component/YAxis'
+import type { YAxis } from '../component/YAxis'
 
 import { getYAxisClass } from '../extension/y-axis'
 

src/pane/XAxisPane.ts

@@ -15,7 +15,7 @@
 import type DrawWidget from '../widget/DrawWidget'
 import XAxisWidget from '../widget/XAxisWidget'
 
-import { type XAxis } from '../component/XAxis'
+import type { XAxis } from '../component/XAxis'
 
 import DrawPane from './DrawPane'
 

src/pane/types.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { type AxisCreate } from '../component/Axis'
+import type { AxisCreate } from '../component/Axis'
 
 export const enum PanePosition {
   Top = 'top',

src/store/ActionStore.ts

@@ -21,7 +21,7 @@ export default class ActionStore {
    */
   private readonly _actions = new Map<ActionType, Action>()
 
-  execute (type: ActionType, data?: any): void {
+  execute (type: ActionType, data?: unknown): void {
     this._actions.get(type)?.execute(data)
   }
 

src/store/ChartStore.ts

@@ -13,7 +13,7 @@
  */
 
 import type Nullable from '../common/Nullable'
-import { type KLineData, type VisibleData } from '../common/Data'
+import type { KLineData, VisibleData } from '../common/Data'
 import type Precision from '../common/Precision'
 import type DeepPartial from '../common/DeepPartial'
 import { formatValue } from '../common/utils/format'

src/store/OverlayStore.ts

@@ -14,7 +14,7 @@
 
 import type Nullable from '../common/Nullable'
 import { UpdateLevel } from '../common/Updater'
-import { type MouseTouchEvent } from '../common/SyntheticEvent'
+import type { MouseTouchEvent } from '../common/SyntheticEvent'
 import { isFunction, isValid, isString, isBoolean } from '../common/utils/typeChecks'
 import { createId } from '../common/utils/id'
 import { LoadDataType } from '../common/LoadDataCallback'

src/store/TimeScaleStore.ts

@@ -14,7 +14,7 @@
 
 import type Nullable from '../common/Nullable'
 import type Coordinate from '../common/Coordinate'
-import { type KLineData } from '../common/Data'
+import type { KLineData } from '../common/Data'
 import type BarSpace from '../common/BarSpace'
 import type VisibleRange from '../common/VisibleRange'
 import { getDefaultVisibleRange } from '../common/VisibleRange'
@@ -81,17 +81,17 @@ export default class TimeScaleStore {
   /**
    * Scale enabled flag
    */
-  private _zoomEnabled: boolean = true
+  private _zoomEnabled = true
 
   /**
    * Scroll enabled flag
    */
-  private _scrollEnabled: boolean = true
+  private _scrollEnabled = true
 
   /**
    * Total space of drawing area
    */
-  private _totalBarSpace: number = 0
+  private _totalBarSpace = 0
 
   /**
    * Space occupied by a single piece of data
@@ -266,8 +266,8 @@ export default class TimeScaleStore {
     const totalBarCount = dataList.length
     const visibleBarCount = this._totalBarSpace / this._barSpace
 
-    let leftMinVisibleBarCount: number
-    let rightMinVisibleBarCount: number
+    let leftMinVisibleBarCount = 0
+    let rightMinVisibleBarCount = 0
 
     if (this._scrollLimitRole === ScrollLimitRole.Distance) {
       leftMinVisibleBarCount = (this._totalBarSpace - this._maxOffsetDistance.right) / this._barSpace
@@ -521,7 +521,7 @@ export default class TimeScaleStore {
       const crosshair = this._chartStore.getTooltipStore().getCrosshair()
       zoomCoordinate = { x: crosshair?.x ?? this._totalBarSpace / 2 }
     }
-    const x = zoomCoordinate!.x!
+    const x = zoomCoordinate.x!
     const floatIndex = this.coordinateToFloatIndex(x)
     const prevBarSpace = this._barSpace
     const barSpace = this._barSpace + scale * (this._barSpace / SCALE_MULTIPLIER)

src/store/TooltipStore.ts

@@ -13,7 +13,7 @@
  */
 
 import type Nullable from '../common/Nullable'
-import { type KLineData } from '../common/Data'
+import type { KLineData } from '../common/Data'
 import type Crosshair from '../common/Crosshair'
 import { UpdateLevel } from '../common/Updater'
 import { isNumber } from '../common/utils/typeChecks'
@@ -43,8 +43,8 @@ export default class TooltipStore {
   setCrosshair (crosshair?: Crosshair, notInvalidate?: boolean): void {
     const dataList = this._chartStore.getDataList()
     const cr = crosshair ?? {}
-    let realDataIndex: number
-    let dataIndex: number
+    let realDataIndex = 0
+    let dataIndex = 0
     if (isNumber(cr.x)) {
       realDataIndex = this._chartStore.getTimeScaleStore().coordinateToDataIndex(cr.x)
       if (realDataIndex < 0) {