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get-dependency.ts
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get-dependency.ts
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#!/usr/bin/env node
/*-----------------------------------------------------------------------------
| Copyright (c) Jupyter Development Team.
| Distributed under the terms of the Modified BSD License.
|----------------------------------------------------------------------------*/
import * as path from 'path';
import * as utils from './utils';
import packageJson = require('package-json');
let allDeps: string[] = [];
let allDevDeps: string[] = [];
/**
* Get the appropriate dependency for a given package name.
*
* @param name - The name of the package.
*
* @returns The dependency version specifier.
*/
export async function getDependency(name: string): Promise<string> {
let version = '';
let versions: { [key: string]: number } = {};
allDeps = [];
allDevDeps = [];
utils.getLernaPaths().forEach(pkgRoot => {
// Read in the package.json.
let packagePath = path.join(pkgRoot, 'package.json');
let data: any;
try {
data = utils.readJSONFile(packagePath);
} catch (e) {
return;
}
if (data.name === name) {
version = '^' + data.version;
return;
}
let deps = data.dependencies || {};
let devDeps = data.devDependencies || {};
if (deps[name]) {
allDeps.push(data.name);
if (deps[name] in versions) {
versions[deps[name]]++;
} else {
versions[deps[name]] = 1;
}
}
if (devDeps[name]) {
allDevDeps.push(data.name);
if (devDeps[name] in versions) {
versions[devDeps[name]]++;
} else {
versions[devDeps[name]] = 1;
}
}
});
if (version) {
return version;
}
if (Object.keys(versions).length > 0) {
// Get the most common version.
version = Object.keys(versions).reduce((a, b) => {
return versions[a] > versions[b] ? a : b;
});
} else {
const releaseData = await packageJson(name);
version = '~' + releaseData.version;
}
return Promise.resolve(version);
}
if (require.main === module) {
// Make sure we have required command line arguments.
if (process.argv.length < 3) {
let msg = '** Must supply a target library name\n';
process.stderr.write(msg);
process.exit(1);
}
let name = process.argv[2];
getDependency(name).then(version => {
console.log('dependency of: ', allDeps);
console.log('devDependency of:', allDevDeps);
console.log(`\n "${name}": "${version}"`);
});
}