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jsynowiec/yarn-or-npmi.js

Last active April 28, 2019 10:50
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Revisions

  1. jsynowiec revised this gist Apr 28, 2019. No changes.
  2. Jakub Synowiec created this gist Oct 20, 2016.
    22 changes: 22 additions & 0 deletions yarn-or-npmi.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,22 @@
    const os = require('os');
    const exec = require('child_process').exec;

    switch (os.platform()) {
    case 'win32':
    exec('yarn --version', (err, stdout, stderr) => {
    if (err) {
    exec('npm install');
    return;
    } else {
    exec('yarn');
    }
    });

    break;
    case 'darwin':
    case 'linux':
    exec('if [ -z `which yarn`]; then npm install; else yarn; fi;');
    break;
    default:
    throw new Error('Unsupported platform.');
    }