microsoft/vscode-react-native
Publicmirrored fromhttps://github.com/microsoft/vscode-react-nativeAvailable
src/common/node/package.ts
82lines · 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 pathModule from "path"; |
| 5 | import * as Q from "q"; |
| 6 | |
| 7 | import {FileSystem} from "./fileSystem"; |
| 8 | import { ErrorHelper } from "../error/errorHelper"; |
| 9 | import { InternalErrorCode } from "../error/internalErrorCode"; |
| 10 | |
| 11 | interface IPackageDependencyDict { |
| 12 | [packageName: string]: string; |
| 13 | } |
| 14 | |
| 15 | export interface IPackageInformation { |
| 16 | name: string; |
| 17 | version: string; |
| 18 | dependencies?: IPackageDependencyDict; |
| 19 | main?: string; |
| 20 | [key: string]: any; |
| 21 | } |
| 22 | |
| 23 | export class Package { |
| 24 | private INFORMATION_PACKAGE_FILENAME = "package.json"; |
| 25 | private DEPENDENCIES_SUBFOLDER = "node_modules"; |
| 26 | |
| 27 | private fileSystem: FileSystem; |
| 28 | |
| 29 | private _path: string; |
| 30 | |
| 31 | constructor(path: string, { fileSystem = new FileSystem() } = {}) { |
| 32 | this._path = path; |
| 33 | this.fileSystem = fileSystem; |
| 34 | } |
| 35 | |
| 36 | public parsePackageInformation(): Q.Promise<IPackageInformation> { |
| 37 | return this.fileSystem.readFile(this.informationJsonFilePath(), "utf8") |
| 38 | .then(data => |
| 39 | <IPackageInformation>JSON.parse(data)); |
| 40 | } |
| 41 | |
| 42 | public name(): Q.Promise<string> { |
| 43 | return this.parseProperty("name"); |
| 44 | } |
| 45 | |
| 46 | public dependencies(): Q.Promise<IPackageDependencyDict> { |
| 47 | return this.parseProperty("dependencies"); |
| 48 | } |
| 49 | |
| 50 | public version(): Q.Promise<string> { |
| 51 | return this.parseProperty("version").then(version => |
| 52 | typeof version === "string" |
| 53 | ? version |
| 54 | : Q.reject<string>(ErrorHelper.getInternalError(InternalErrorCode.CouldNotParsePackageVersion, this.informationJsonFilePath(), version))); |
| 55 | } |
| 56 | |
| 57 | public setMainFile(value: string): Q.Promise<void> { |
| 58 | return this.parsePackageInformation() |
| 59 | .then(packageInformation => { |
| 60 | packageInformation.main = value; |
| 61 | return this.fileSystem.writeFile(this.informationJsonFilePath(), JSON.stringify(<Object>packageInformation)); |
| 62 | }); |
| 63 | } |
| 64 | |
| 65 | public dependencyPath(dependencyName: string) { |
| 66 | return pathModule.resolve(this._path, this.DEPENDENCIES_SUBFOLDER, dependencyName); |
| 67 | } |
| 68 | |
| 69 | public dependencyPackage(dependencyName: string): Package { |
| 70 | return new Package(this.dependencyPath(dependencyName), { fileSystem: this.fileSystem}); |
| 71 | } |
| 72 | |
| 73 | public informationJsonFilePath(): string { |
| 74 | return pathModule.resolve(this._path, this.INFORMATION_PACKAGE_FILENAME); |
| 75 | } |
| 76 | |
| 77 | private parseProperty(name: string): Q.Promise<any> { |
| 78 | return this.parsePackageInformation() |
| 79 | .then(packageInformation => |
| 80 | packageInformation[name]); |
| 81 | } |
| 82 | } |
| 83 | |