microsoft/vscode-react-native
Publicmirrored fromhttps://github.com/microsoft/vscode-react-nativeAvailable
src/utils/tsconfigHelper.ts
64lines · modecode
| 1 | // Copyright (c) Microsoft Corporation. All rights reserved. |
| 2 | // Licensed under the MIT license. See LICENSE file in the project root for details. |
| 3 | |
| 4 | import * as Q from "q"; |
| 5 | import * as vscode from "vscode"; |
| 6 | import fs = require("fs"); |
| 7 | import path = require("path"); |
| 8 | import {FileSystem} from "./node/fileSystem"; |
| 9 | |
| 10 | export class TsConfigHelper { |
| 11 | |
| 12 | public static get tsConfigPath(): string { |
| 13 | return path.join(vscode.workspace.rootPath, "tsconfig.json"); |
| 14 | } |
| 15 | |
| 16 | /** |
| 17 | * Constructs a JSON object from tsconfig.json. Will create the file if needed. |
| 18 | */ |
| 19 | public static readConfigJson(): Q.Promise<any> { |
| 20 | let tsConfigPath: string = TsConfigHelper.tsConfigPath; |
| 21 | let fileSystem = new FileSystem(); |
| 22 | |
| 23 | return fileSystem.exists(tsConfigPath) |
| 24 | .then(function(exists: boolean): Q.Promise<void> { |
| 25 | if (!exists) { |
| 26 | return fileSystem.writeFile(tsConfigPath, "{}"); |
| 27 | } |
| 28 | }) |
| 29 | .then(function(): Q.Promise<string> { |
| 30 | return fileSystem.readFile(tsConfigPath, "utf-8"); |
| 31 | }) |
| 32 | .then(function(jsonContents: string): Q.Promise<any> { |
| 33 | return JSON.parse(jsonContents); |
| 34 | }); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Writes out a JSON configuration object to the tsconfig.json file. |
| 39 | */ |
| 40 | public static writeConfigJson(configJson: any): Q.Promise<void> { |
| 41 | let tsConfigPath: string = TsConfigHelper.tsConfigPath; |
| 42 | |
| 43 | return Q.nfcall<void>(fs.writeFile, tsConfigPath, JSON.stringify(configJson, null, 4)); |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * Enable javascript intellisense via typescript. |
| 48 | */ |
| 49 | public static allowJs(enabled: boolean): Q.Promise<void> { |
| 50 | return TsConfigHelper.readConfigJson() |
| 51 | .then(function(tsConfigJson: any): Q.Promise<void> { |
| 52 | tsConfigJson.compilerOptions = tsConfigJson.compilerOptions || {}; |
| 53 | |
| 54 | // Return if the setting is already correctly set. |
| 55 | if (tsConfigJson.compilerOptions.allowJs === enabled) { |
| 56 | return Q.resolve<void>(void 0); |
| 57 | } |
| 58 | |
| 59 | tsConfigJson.compilerOptions.allowJs = enabled; |
| 60 | |
| 61 | return TsConfigHelper.writeConfigJson(tsConfigJson); |
| 62 | }); |
| 63 | } |
| 64 | } |
| 65 | |