diff --git a/build/progress.js b/build/progress.js
index b331400d6..426bd3116 100644
--- a/build/progress.js
+++ b/build/progress.js
@@ -53,8 +53,13 @@ module.exports = function progress(options = {}) {
         },
 
         buildEnd() {
-            process.stdout.clearLine();
-            process.stdout.cursorTo(0);
+            if (process.stdout.isTTY) {
+                process.stdout.clearLine();
+                process.stdout.cursorTo(0);
+            }
+            else {
+                console.log('');
+            }
         }
     };
 };
diff --git a/package.json b/package.json
index d6b543639..782f5f040 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,8 @@
     "build:lib": "npx tsc -m ES2015 --outDir lib",
     "watch:bundle": "node build/build.js --watch",
     "watch:lib": "npx tsc -w -m ES2015 --outDir lib",
-    "test": "npx jest --config test/ut/jest.config.js"
+    "test": "npx jest --config test/ut/jest.config.js",
+    "lint": "npx eslint src/**/*.ts"
   },
   "license": "BSD-3-Clause",
   "types": "index.d.ts",
diff --git a/src/Element.ts b/src/Element.ts
index fd5324e38..0f75e67fb 100644
--- a/src/Element.ts
+++ b/src/Element.ts
@@ -293,6 +293,7 @@ export type ElementCalculateTextPosition = (
 let tmpTextPosCalcRes = {} as TextPositionCalculationResult;
 let tmpBoundingRect = new BoundingRect(0, 0, 0, 0);
 
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 interface Element<Props extends ElementProps = ElementProps> extends Transformable,
     Eventful<{
         [key in ElementEventName]: (e: ElementEvent) => void | boolean
diff --git a/src/PainterBase.ts b/src/PainterBase.ts
index a65492dab..c4eedeb49 100644
--- a/src/PainterBase.ts
+++ b/src/PainterBase.ts
@@ -4,10 +4,10 @@ import { GradientObject } from './graphic/Gradient';
 import { PatternObject } from './graphic/Pattern';
 import { Dictionary } from './core/types';
 
-interface PainterOption {
-    width?: number | string  // Can be 10 / 10px / auto
-    height?: number | string
-}
+// interface PainterOption {
+//     width?: number | string  // Can be 10 / 10px / auto
+//     height?: number | string
+// }
 
 export interface PainterBase {
 
diff --git a/src/animation/Animator.ts b/src/animation/Animator.ts
index 1fd3a12e9..e65dcc971 100644
--- a/src/animation/Animator.ts
+++ b/src/animation/Animator.ts
@@ -430,8 +430,8 @@ class Track {
             for (let i = 0; i < kfsLen; i++) {
                 if (arrDim === 0) {
                     if (this.isValueColor) {
-                        kfs[i].additiveValue
-                            = add1DArray([], kfs[i].value as NumberArray, startValue as NumberArray, -1);
+                        kfs[i].additiveValue =
+                            add1DArray([], kfs[i].value as NumberArray, startValue as NumberArray, -1);
                     }
                     else {
                         kfs[i].additiveValue = kfs[i].value as number - (startValue as number);
diff --git a/src/animation/Clip.ts b/src/animation/Clip.ts
index 67454f979..caddaf561 100644
--- a/src/animation/Clip.ts
+++ b/src/animation/Clip.ts
@@ -21,7 +21,7 @@ type ondestroyCallback = () => void
 type onrestartCallback = () => void
 
 export type DeferredEventTypes = 'destroy' | 'restart'
-type DeferredEventKeys = 'ondestroy' | 'onrestart'
+// type DeferredEventKeys = 'ondestroy' | 'onrestart'
 
 export interface ClipProps {
     life?: number
diff --git a/src/config.ts b/src/config.ts
index 07c468ae4..7be4a7898 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -2,9 +2,11 @@ let dpr = 1;
 
 // If in browser environment
 if (typeof window !== 'undefined') {
-    dpr = Math.max(window.devicePixelRatio 
-    	|| (window.screen && (window.screen as any).deviceXDPI / (window.screen as any).logicalXDPI) 
-    	|| 1, 1);
+    dpr = Math.max(
+        window.devicePixelRatio
+        || (window.screen && (window.screen as any).deviceXDPI / (window.screen as any).logicalXDPI)
+        || 1, 1
+    );
 }
 
 /**
diff --git a/src/core/PathProxy.ts b/src/core/PathProxy.ts
index b28e832de..0d520d891 100644
--- a/src/core/PathProxy.ts
+++ b/src/core/PathProxy.ts
@@ -1059,8 +1059,8 @@ export default class PathProxy {
                     const psi = d[i++];
                     const anticlockwise = !d[i++];
                     const r = (rx > ry) ? rx : ry;
-                    const scaleX = (rx > ry) ? 1 : rx / ry;
-                    const scaleY = (rx > ry) ? ry / rx : 1;
+                    // const scaleX = (rx > ry) ? 1 : rx / ry;
+                    // const scaleY = (rx > ry) ? ry / rx : 1;
                     const isEllipse = mathAbs(rx - ry) > 1e-3;
                     let endAngle = startAngle + delta;
                     let breakBuild = false;
@@ -1174,6 +1174,7 @@ export interface PathRebuilder {
     bezierCurveTo(x: number, y: number, x2: number, y2: number, x3: number, y3: number): void
     quadraticCurveTo(x: number, y: number, x2: number, y2: number): void
     arc(cx: number, cy: number, r: number, startAngle: number, endAngle: number, anticlockwise: boolean): void
+    // eslint-disable-next-line max-len
     ellipse(cx: number, cy: number, radiusX: number, radiusY: number, rotation: number, startAngle: number, endAngle: number, anticlockwise: boolean): void
     rect(x: number, y: number, width: number, height: number): void
     closePath(): void
diff --git a/src/core/arrayDiff.ts b/src/core/arrayDiff.ts
index 0a19115ad..4c1186d37 100644
--- a/src/core/arrayDiff.ts
+++ b/src/core/arrayDiff.ts
@@ -185,6 +185,6 @@ function clonePath(path: DiffPath) {
     return { newPos: path.newPos, components: path.components.slice(0) };
 }
 
-export default function arrayDiff<T> (oldArr: T[], newArr: T[], equal?: EqualFunc<T>): DiffComponent[] {
+export default function arrayDiff<T>(oldArr: T[], newArr: T[], equal?: EqualFunc<T>): DiffComponent[] {
     return diff(oldArr, newArr, equal);
 }
\ No newline at end of file
diff --git a/src/core/env.ts b/src/core/env.ts
index c47445814..010ef9f0c 100644
--- a/src/core/env.ts
+++ b/src/core/env.ts
@@ -74,7 +74,7 @@ function detect(ua: string, env: Env) {
     if (edge) {
         browser.edge = true;
         browser.version = edge[1];
-        browser.newEdge = +edge[1].split('.')[0] > 18; 
+        browser.newEdge = +edge[1].split('.')[0] > 18;
     }
 
     // It is difficult to detect WeChat in Win Phone precisely, because ua can
@@ -108,7 +108,7 @@ function detect(ua: string, env: Env) {
 
     // except IE 6-8 and very old firefox 2-3 & opera 10.1
     // other browsers all support `transform`
-    env.transformSupported = env.transform3dSupported 
+    env.transformSupported = env.transform3dSupported
         // transform 2D is supported in IE9
         || (browser.ie && +browser.version >= 9);
 
diff --git a/src/debug/showDebugDirtyRect.ts b/src/debug/showDebugDirtyRect.ts
index a307bd154..f0c17831c 100644
--- a/src/debug/showDebugDirtyRect.ts
+++ b/src/debug/showDebugDirtyRect.ts
@@ -17,7 +17,7 @@ class DebugRect {
         extend(style, {
             backgroundColor: 'rgba(0, 0, 255, 0.2)',
             border: '1px solid #00f'
-        })
+        });
         dom.style.cssText = `
 position: absolute;
 opacity: 0;
diff --git a/src/graphic/Displayable.ts b/src/graphic/Displayable.ts
index 689b46fd8..5293d501f 100644
--- a/src/graphic/Displayable.ts
+++ b/src/graphic/Displayable.ts
@@ -79,6 +79,7 @@ export type DisplayableState = Pick<DisplayableProps, DisplayableStatePropNames>
 const PRIMARY_STATES_KEYS = ['z', 'z2', 'invisible'] as const;
 const PRIMARY_STATES_KEYS_IN_HOVER_LAYER = ['invisible'] as const;
 
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 interface Displayable<Props extends DisplayableProps = DisplayableProps> {
     animate(key?: '', loop?: boolean): Animator<this>
     animate(key: 'style', loop?: boolean): Animator<this['style']>
diff --git a/src/graphic/Path.ts b/src/graphic/Path.ts
index 34885002d..9776eface 100644
--- a/src/graphic/Path.ts
+++ b/src/graphic/Path.ts
@@ -107,6 +107,7 @@ export interface PathProps extends DisplayableProps {
 type PathKey = keyof PathProps
 type PathPropertyType = PropType<PathProps, PathKey>
 
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 interface Path<Props extends PathProps = PathProps> {
     animate(key?: '', loop?: boolean): Animator<this>
     animate(key: 'style', loop?: boolean): Animator<this['style']>
diff --git a/src/graphic/helper/dashStyle.ts b/src/graphic/helper/dashStyle.ts
index 1a31efdc9..732ad45c5 100644
--- a/src/graphic/helper/dashStyle.ts
+++ b/src/graphic/helper/dashStyle.ts
@@ -5,9 +5,9 @@ export function normalizeLineDash(lineType: any, lineWidth?: number): number[] |
         return null;
     }
     lineWidth = lineWidth || 1;
-    return lineType === 'dashed' 
+    return lineType === 'dashed'
         ? [4 * lineWidth, 2 * lineWidth]
-        : lineType === 'dotted' 
+        : lineType === 'dotted'
             ? [lineWidth]
             : isNumber(lineType)
                 ? [lineType] : isArray(lineType) ? lineType : null;
diff --git a/src/graphic/helper/roundSector.ts b/src/graphic/helper/roundSector.ts
index d0dc215bb..ef5a7f466 100644
--- a/src/graphic/helper/roundSector.ts
+++ b/src/graphic/helper/roundSector.ts
@@ -22,9 +22,9 @@ type CornerTangents = {
 };
 
 function intersect(
-    x0: number, y0: number, 
-    x1: number, y1: number, 
-    x2: number, y2: number, 
+    x0: number, y0: number,
+    x1: number, y1: number,
+    x2: number, y2: number,
     x3: number, y3: number
 ): [number, number] {
     const x10 = x1 - x0;
@@ -41,9 +41,9 @@ function intersect(
 
 // Compute perpendicular offset line of length rc.
 function computeCornerTangents(
-    x0: number, y0: number, 
-    x1: number, y1: number, 
-    radius: number, cr: number, 
+    x0: number, y0: number,
+    x1: number, y1: number,
+    radius: number, cr: number,
     clockwise: boolean
 ): CornerTangents {
   const x01 = x0 - x1;
@@ -150,14 +150,14 @@ export function buildPath(ctx: CanvasRenderingContext2D | PathProxy, shape: {
     // is a circle or annulus
     else if (arc > PI2 - e) {
         ctx.moveTo(
-            x + radius * mathCos(startAngle), 
+            x + radius * mathCos(startAngle),
             y + radius * mathSin(startAngle)
         );
         ctx.arc(x, y, radius, startAngle, endAngle, !clockwise);
 
         if (innerRadius > e) {
             ctx.moveTo(
-                x + innerRadius * mathCos(endAngle), 
+                x + innerRadius * mathCos(endAngle),
                 y + innerRadius * mathSin(endAngle)
             );
             ctx.arc(x, y, innerRadius, endAngle, startAngle, clockwise);
@@ -219,15 +219,17 @@ export function buildPath(ctx: CanvasRenderingContext2D | PathProxy, shape: {
 
             // Have the corners merged?
             if (cr1 < cr) {
+                // eslint-disable-next-line max-len
                 ctx.arc(x + ct0.cx, y + ct0.cy, cr1, mathATan2(ct0.y01, ct0.x01), mathATan2(ct1.y01, ct1.x01), !clockwise);
             }
             else {
-              // draw the two corners and the ring
-              ctx.arc(x + ct0.cx, y + ct0.cy, cr1, mathATan2(ct0.y01, ct0.x01), mathATan2(ct0.y11, ct0.x11), !clockwise);
-
-              ctx.arc(x, y, radius, mathATan2(ct0.cy + ct0.y11, ct0.cx + ct0.x11), mathATan2(ct1.cy + ct1.y11, ct1.cx + ct1.x11), !clockwise);
-
-              ctx.arc(x + ct1.cx, y + ct1.cy, cr1, mathATan2(ct1.y11, ct1.x11), mathATan2(ct1.y01, ct1.x01), !clockwise);
+                // draw the two corners and the ring
+                // eslint-disable-next-line max-len
+                ctx.arc(x + ct0.cx, y + ct0.cy, cr1, mathATan2(ct0.y01, ct0.x01), mathATan2(ct0.y11, ct0.x11), !clockwise);
+                // eslint-disable-next-line max-len
+                ctx.arc(x, y, radius, mathATan2(ct0.cy + ct0.y11, ct0.cx + ct0.x11), mathATan2(ct1.cy + ct1.y11, ct1.cx + ct1.x11), !clockwise);
+                // eslint-disable-next-line max-len
+                ctx.arc(x + ct1.cx, y + ct1.cy, cr1, mathATan2(ct1.y11, ct1.x11), mathATan2(ct1.y01, ct1.x01), !clockwise);
             }
         }
         // the outer ring is a circular arc
@@ -248,15 +250,17 @@ export function buildPath(ctx: CanvasRenderingContext2D | PathProxy, shape: {
 
             // Have the corners merged?
             if (cr0 < icr) {
+                // eslint-disable-next-line max-len
                 ctx.arc(x + ct0.cx, y + ct0.cy, cr0, mathATan2(ct0.y01, ct0.x01), mathATan2(ct1.y01, ct1.x01), !clockwise);
             }
             // draw the two corners and the ring
             else {
-              ctx.arc(x + ct0.cx, y + ct0.cy, cr0, mathATan2(ct0.y01, ct0.x01), mathATan2(ct0.y11, ct0.x11), !clockwise);
-
-              ctx.arc(x, y, innerRadius, mathATan2(ct0.cy + ct0.y11, ct0.cx + ct0.x11), mathATan2(ct1.cy + ct1.y11, ct1.cx + ct1.x11), clockwise);
-
-              ctx.arc(x + ct1.cx, y + ct1.cy, cr0, mathATan2(ct1.y11, ct1.x11), mathATan2(ct1.y01, ct1.x01), !clockwise);
+                // eslint-disable-next-line max-len
+                ctx.arc(x + ct0.cx, y + ct0.cy, cr0, mathATan2(ct0.y01, ct0.x01), mathATan2(ct0.y11, ct0.x11), !clockwise);
+                // eslint-disable-next-line max-len
+                ctx.arc(x, y, innerRadius, mathATan2(ct0.cy + ct0.y11, ct0.cx + ct0.x11), mathATan2(ct1.cy + ct1.y11, ct1.cx + ct1.x11), clockwise);
+                // eslint-disable-next-line max-len
+                ctx.arc(x + ct1.cx, y + ct1.cy, cr0, mathATan2(ct1.y11, ct1.x11), mathATan2(ct1.y01, ct1.x01), !clockwise);
             }
         }
         // the inner ring is just a circular arc
diff --git a/src/graphic/shape/Sector.ts b/src/graphic/shape/Sector.ts
index 0c0f51d13..0b3f6cdfb 100644
--- a/src/graphic/shape/Sector.ts
+++ b/src/graphic/shape/Sector.ts
@@ -30,7 +30,7 @@ class Sector extends Path<SectorProps> {
     }
 
     buildPath(ctx: CanvasRenderingContext2D, shape: SectorShape) {
-        roundSectorHelper.buildPath(ctx, shape)
+        roundSectorHelper.buildPath(ctx, shape);
     }
 
     isZeroArea() {
diff --git a/src/svg/Painter.ts b/src/svg/Painter.ts
index 8cb19150d..811eb64a3 100644
--- a/src/svg/Painter.ts
+++ b/src/svg/Painter.ts
@@ -444,13 +444,11 @@ class SVGPainter implements PainterBase {
     dispose() {
         this.root.innerHTML = '';
 
-        this._svgRoot
-            = this._backgroundRoot
-            = this._svgDom
-            = this._backgroundNode
-            = this._viewport
-            = this.storage
-            = null;
+        this._svgRoot =
+            this._backgroundRoot =
+            this._svgDom =
+            this._backgroundNode =
+            this._viewport = this.storage = null;
     }
 
     clear() {
diff --git a/src/tool/dividePath.ts b/src/tool/dividePath.ts
index a7fc8a38c..6c670a894 100644
--- a/src/tool/dividePath.ts
+++ b/src/tool/dividePath.ts
@@ -1,7 +1,7 @@
 import { fromPoints } from '../core/bbox';
 import BoundingRect from '../core/BoundingRect';
 import Point from '../core/Point';
-import { each, map } from '../core/util';
+import { map } from '../core/util';
 import Path from '../graphic/Path';
 import Polygon from '../graphic/shape/Polygon';
 import Rect from '../graphic/shape/Rect';
diff --git a/src/tool/morphPath.ts b/src/tool/morphPath.ts
index 6c6fd205e..c29d33d59 100644
--- a/src/tool/morphPath.ts
+++ b/src/tool/morphPath.ts
@@ -2,7 +2,7 @@ import PathProxy from '../core/PathProxy';
 import { cubicSubdivide } from '../core/curve';
 import Path from '../graphic/Path';
 import Element, { ElementAnimateConfig } from '../Element';
-import { defaults, extend, map } from '../core/util';
+import { defaults, map } from '../core/util';
 import { lerp } from '../core/vector';
 import Group, { GroupLike } from '../graphic/Group';
 import { clonePath } from './path';
@@ -558,10 +558,15 @@ function hilbert(x: number, y: number, minX: number, minY: number, maxX: number,
     let d = 0;
     let tmp: number;
     for (let s = (1 << bits) / 2; s > 0; s /= 2) {
-        let rx = 0, ry = 0;
+        let rx = 0;
+        let ry = 0;
 
-        if ((x & s) > 0) rx = 1;
-        if ((y & s) > 0) ry = 1;
+        if ((x & s) > 0) {
+            rx = 1;
+        }
+        if ((y & s) > 0) {
+            ry = 1;
+        }
 
         d += s * s * ((3 * rx) ^ ry);
 
@@ -603,7 +608,7 @@ function sortPaths(pathList: Path[]): Path[] {
             cp,
             z: hilbert(cp[0], cp[1], xMin, yMin, xMax, yMax),
             path: pathList[idx]
-        }
+        };
     });
 
     return items.sort((a, b) => a.z - b.z).map(item => item.path);
@@ -645,7 +650,7 @@ function createEmptyReturn() {
         fromIndividuals: [] as Path[],
         toIndividuals: [] as Path[],
         count: 0
-    }
+    };
 }
 /**
  * Make combine morphing from many paths to one.
@@ -756,7 +761,7 @@ export function combineMorph(
                 restoreToPath();
                 oldDone && oldDone();
             }
-        }
+        };
         // Animate each element individually.
         for (let i = 0; i < toLen; i++) {
             // TODO only call during once?
@@ -886,4 +891,4 @@ export function separateMorph(
     };
 }
 
-export { split as defaultDividePath }
\ No newline at end of file
+export { split as defaultDividePath };
diff --git a/src/vml/Painter.ts b/src/vml/Painter.ts
index 945c8cbf4..2d55f5726 100644
--- a/src/vml/Painter.ts
+++ b/src/vml/Painter.ts
@@ -3,9 +3,8 @@
  * VML Painter.
  */
 
-import {logError} from '../core/util';
+import {logError, each} from '../core/util';
 import * as vmlCore from './core';
-import {each} from '../core/util';
 
 function parseInt10(val) {
     return parseInt(val, 10);
diff --git a/src/zrender.ts b/src/zrender.ts
index a1d02b6e9..b7de31820 100644
--- a/src/zrender.ts
+++ b/src/zrender.ts
@@ -15,7 +15,7 @@ import Storage from './Storage';
 import {PainterBase} from './PainterBase';
 import Animation from './animation/Animation';
 import HandlerProxy from './dom/HandlerProxy';
-import Element, {ElementEventCallback, ElementEvent} from './Element';
+import Element, { ElementEventCallback } from './Element';
 import { Dictionary, ElementEventName, RenderedEvent, WithThisType } from './core/types';
 import { LayerConfig } from './canvas/Layer';
 import { GradientObject } from './graphic/Gradient';
@@ -407,6 +407,7 @@ class ZRender {
     }
 
     on<Ctx>(eventName: ElementEventName, eventHandler: ElementEventCallback<Ctx, ZRenderType>, context?: Ctx): this
+    // eslint-disable-next-line max-len
     on<Ctx>(eventName: string, eventHandler: WithThisType<EventCallback<any[]>, unknown extends Ctx ? ZRenderType : Ctx>, context?: Ctx): this
     // eslint-disable-next-line max-len
     on<Ctx>(eventName: string, eventHandler: (...args: any) => any, context?: Ctx): this {