逐步完成前后端服务器

frontend/node_modules/zrender/lib/graphic/IncrementalDisplayable.d.ts

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+import Displayble from './Displayable';
+import BoundingRect from '../core/BoundingRect';
+export default class IncrementalDisplayable extends Displayble {
+    notClear: boolean;
+    incremental: boolean;
+    private _displayables;
+    private _temporaryDisplayables;
+    private _cursor;
+    traverse<T>(cb: (this: T, el: this) => void, context: T): void;
+    useStyle(): void;
+    getCursor(): number;
+    innerAfterBrush(): void;
+    clearDisplaybles(): void;
+    clearTemporalDisplayables(): void;
+    addDisplayable(displayable: Displayble, notPersistent?: boolean): void;
+    addDisplayables(displayables: Displayble[], notPersistent?: boolean): void;
+    getDisplayables(): Displayble[];
+    getTemporalDisplayables(): Displayble[];
+    eachPendingDisplayable(cb: (displayable: Displayble) => void): void;
+    update(): void;
+    getBoundingRect(): BoundingRect;
+    contain(x: number, y: number): boolean;
+}