3 examples of 'npm downgrade' in JavaScript

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113function runSimpleUpgrade(version) {
114 return new TPromise(function (resolve) {
115 var npmCommand = version ? 'npm install -g npm@' + version : 'npm install -g npm',
116 stdout = [],
117 stderr = [],
118 child = void 0;
119
120 try {
121 child = spawn('powershell.exe', ['-NoProfile', '-NoLogo', npmCommand]);
122 } catch (error) {
123 // This is dirty, but the best way for us to try/catch right now
124 resolve({ error: error });
125 }
126
127 child.stdout.on('data', function (data) {
128 return stdout.push(data.toString());
129 });
130 child.stderr.on('data', function (data) {
131 return stderr.push(data.toString());
132 });
133
134 child.on('exit', function () {
135 return resolve({ stderr: stderr, stdout: stdout });
136 });
137
138 child.stdin.end();
139 });
140}
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26installNpmPackage(name: string, version: string | null | undefined, cwd: string = this.scopes.localPath) {
27 const versionWithDelimiter = version ? `@${version}` : '';
28 const cmd = `npm i --save ${name}${versionWithDelimiter}`;
29 return this.command.runCmd(cmd, cwd);
30}
70function installVersion(version, forceInstall) {
71 return resolveVersion(version)
72 .then(function(_version) {
73 version = _version;
74 return Q.nfcall(tmp.dir.bind(tmp));
75 })
76 .spread(function(tmpDir) {
77 var options = {
78 name: 'gitbook',
79 version: version,
80 path: tmpDir,
81 forceInstall: !!forceInstall,
82 npmLoad: {
83 loglevel: 'silent',
84 loaded: false,
85 prefix: tmpDir
86 }
87 };
88 console.log('Installing GitBook', version);
89 return Q.nfcall(npmi.bind(npmi), options).thenResolve(tmpDir);
90 })
91 .then(function(tmpDir) {
92 var gitbookRoot = path.resolve(tmpDir, 'node_modules/gitbook');
93 var packageJson = fs.readJsonSync(path.resolve(gitbookRoot, 'package.json'));
94 var version = packageJson.version;
95
96 var outputFolder = path.resolve(config.VERSIONS_ROOT, version);
97
98 if (!tags.isValid(version)) throw 'Invalid GitBook version, should satisfies '+config.GITBOOK_VERSION;
99
100 // Copy to the install folder
101 return Q.nfcall(fs.copy.bind(fs), gitbookRoot, outputFolder)
102 .thenResolve(version);
103 });
104}

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