36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
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#!/usr/bin/env node
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/**
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* Performs an `npm install`. Since that's a costly operation,
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* it will only perform it if needed, that is, if the packages
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* installed at `node_modules` aren't in sync over what
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* `package-lock.json` has. For that, modification times of both
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* files will be compared. If the package-lock is newer, it means that
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* the packages at node_modules may be outdated. That will happen,
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* for example, when switching branches.
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*/
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const fs = require( 'fs' );
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const spawnSync = require( 'child_process' ).spawnSync;
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const needsInstall = () => {
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try {
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const shrinkwrapTime = fs.statSync( 'package-lock.json' ).mtime;
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const nodeModulesTime = fs.statSync( 'node_modules' ).mtime;
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return shrinkwrapTime - nodeModulesTime > 1000; // In Windows, directory mtime has less precision than file mtime
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} catch ( e ) {
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return true;
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}
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};
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if ( needsInstall() ) {
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const installResult = spawnSync( 'npm', [ 'install' ], {
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shell: true,
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stdio: 'inherit',
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} ).status;
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if ( installResult ) {
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process.exit( installResult );
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}
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fs.utimesSync( 'node_modules', new Date(), new Date() );
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}
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