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fix(@ngtools/webpack): decorate file system
Followup to angular#7169
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107 changes: 107 additions & 0 deletions
107
packages/@ngtools/webpack/src/virtual_file_system_decorator.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| import { Stats } from 'fs'; | ||
| import { InputFileSystem, Callback } from './webpack'; | ||
| import { WebpackCompilerHost } from './compiler_host'; | ||
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| export class VirtualFileSystemDecorator implements InputFileSystem { | ||
| constructor( | ||
| private _inputFileSystem: InputFileSystem, | ||
| private _webpackCompilerHost: WebpackCompilerHost | ||
| ) { } | ||
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| private _readFileSync(path: string): string | null { | ||
| if (this._webpackCompilerHost.fileExists(path, false)) { | ||
| return this._webpackCompilerHost.readFile(path); | ||
| } | ||
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| return null; | ||
| } | ||
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| private _statSync(path: string): Stats | null { | ||
| if (this._webpackCompilerHost.fileExists(path, false) | ||
| || this._webpackCompilerHost.directoryExists(path, false)) { | ||
| return this._webpackCompilerHost.stat(path); | ||
| } | ||
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| return null; | ||
| } | ||
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| private _readDirSync(path: string): string[] | null { | ||
| if (this._webpackCompilerHost.directoryExists(path, false)) { | ||
| const dirs = this._webpackCompilerHost.getDirectories(path); | ||
| const files = this._webpackCompilerHost.getFiles(path); | ||
| return files.concat(dirs); | ||
| } | ||
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| return null; | ||
| } | ||
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| stat(path: string, callback: Callback<any>): void { | ||
| const result = this._statSync(path); | ||
| if (result) { | ||
| callback(null, result); | ||
| } else { | ||
| this._inputFileSystem.stat(path, callback); | ||
| } | ||
| } | ||
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| readdir(path: string, callback: Callback<any>): void { | ||
| const result = this._readDirSync(path); | ||
| if (result) { | ||
| callback(null, result); | ||
| } else { | ||
| this._inputFileSystem.readdir(path, callback); | ||
| } | ||
| } | ||
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| readFile(path: string, callback: Callback<any>): void { | ||
| const result = this._readFileSync(path); | ||
| if (result) { | ||
| callback(null, result); | ||
| } else { | ||
| this._inputFileSystem.readFile(path, callback); | ||
| } | ||
| } | ||
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| readJson(path: string, callback: Callback<any>): void { | ||
| this._inputFileSystem.readJson(path, callback); | ||
| } | ||
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| readlink(path: string, callback: Callback<any>): void { | ||
| this._inputFileSystem.readlink(path, callback); | ||
| } | ||
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| statSync(path: string): Stats { | ||
| const result = this._statSync(path); | ||
| return result || this._inputFileSystem.statSync(path); | ||
| } | ||
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| readdirSync(path: string): string[] { | ||
| const result = this._readDirSync(path); | ||
| return result || this._inputFileSystem.readdirSync(path); | ||
| } | ||
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| readFileSync(path: string): string { | ||
| const result = this._readFileSync(path); | ||
| return result || this._inputFileSystem.readFileSync(path); | ||
| } | ||
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| readJsonSync(path: string): string { | ||
| return this._inputFileSystem.readJsonSync(path); | ||
| } | ||
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| readlinkSync(path: string): string { | ||
| return this._inputFileSystem.readlinkSync(path); | ||
| } | ||
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| purge(changes?: string[] | string): void { | ||
| if (typeof changes === 'string') { | ||
| this._webpackCompilerHost.invalidate(changes); | ||
| } else if (Array.isArray(changes)) { | ||
| changes.forEach((fileName: string) => this._webpackCompilerHost.invalidate(fileName)); | ||
| } | ||
| if (this._inputFileSystem.purge) { | ||
| this._inputFileSystem.purge(changes); | ||
| } | ||
| } | ||
| } |
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