Pixijs Migration V8

This skill is a breaking-change checklist for bringing a v7 codebase up to v8. Work top-down through the categories; the list maps each v7 pattern to its v8 replacement.

## Quick Start

Install the single package, then port in this order: imports → Application init → Graphics → Text → events → shaders/filters → cleanup.

```ts
const app = new Application();
await app.init({ width: 800, height: 600 });
document.body.appendChild(app.canvas);

const g = new Graphics()
  .rect(0, 0, 100, 100)
  .fill({ color: 0xff0000 })
  .stroke({ width: 2, color: 0x000000 });
app.stage.addChild(g);
```

**Related skills:** `pixijs-application` (async init), `pixijs-scene-graphics` (new fill/stroke API), `pixijs-custom-rendering` (shader rework), `pixijs-scene-text` (Text constructor changes), `pixijs-performance` (destroy patterns).

## Migration Checklist: v7 to v8

Work through each category. Each item shows the expected v8 pattern and the v7 pattern that must be replaced.

### Initialization

**Async app.init()** -- Expected:

```ts
const app = new Application();
await app.init({ width: 800, height: 600 });
document.body.appendChild(app.canvas);
```

Fail: passing options to `new Application({...})` and using synchronously.

**app.canvas replaces app.view** -- `app.view` emits a deprecation warning.

**Application type parameter** -- Expected: `new Application<Renderer<HTMLCanvasElement>>()`. Fail: `new Application<HTMLCanvasElement>()`.

### Imports

**Single package** -- Expected:

```ts
import { Sprite, Application, Assets, Graphics } from "pixi.js";
```

Fail: importing from any of the deprecated v7 core `@pixi/*` sub-packages (see list below). Supplemental packages like `@pixi/sound` are still valid and should continue to be used.

Deprecated `@pixi/*` packages (never use, any version):
`@pixi/accessibility`, `@pixi/app`, `@pixi/assets`, `@pixi/compressed-textures`, `@pixi/core`, `@pixi/display`, `@pixi/events`, `@pixi/extensions`, `@pixi/extract`, `@pixi/filter-alpha`, `@pixi/filter-blur`, `@pixi/filter-color-matrix`, `@pixi/filter-displacement`, `@pixi/filter-fxaa`, `@pixi/filter-noise`, `@pixi/graphics`, `@pixi/mesh`, `@pixi/mesh-extras`, `@pixi/mixin-cache-as-bitmap`, `@pixi/mixin-get-child-by-name`, `@pixi/mixin-get-global-position`, `@pixi/particle-container`, `@pixi/prepare`, `@pixi/sprite`, `@pixi/sprite-animated`, `@pixi/sprite-tiling`, `@pixi/spritesheet`, `@pixi/text`, `@pixi/text-bitmap`, `@pixi/text-html`.

**Custom builds** -- Set `skipExtensionImports: true` and import only needed extensions:

```ts
import "pixi.js/graphics";
import "pixi.js/text";
import "pixi.js/events";
import { Application } from "pixi.js";
await app.init({ skipExtensionImports: true });
```

Note: `manageImports: false` is still accepted but `@deprecated since 8.1.6`; prefer `skipExtensionImports: true`.

**Extensions not auto-imported** (require explicit import even with default auto-imports enabled):
`pixi.js/advanced-blend-modes`, `pixi.js/unsafe-eval`, `pixi.js/prepare`, `pixi.js/math-extras`, `pixi.js/dds`, `pixi.js/ktx`, `pixi.js/ktx2`, `pixi.js/basis`.

**Community filters** -- Expected: `import { AdjustmentFilter } from 'pixi-filters/adjustment'`. Fail: `@pixi/filter-adjustment`.

### Graphics API

**Shape-then-fill** -- Expected:

```ts
const g = new Graphics().rect(50, 50, 100, 100).fill(0xff0000);
```

Fail: `beginFill(0xff0000).drawRect(50, 50, 100, 100).