mirror of
https://github.com/balena-io/balena-cli.git
synced 2024-12-27 01:11:03 +00:00
58 lines
2.1 KiB
JavaScript
58 lines
2.1 KiB
JavaScript
#!/usr/bin/env node
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'use strict';
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/**
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* Check that semver v1 is greater than or equal to semver v2.
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*
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* We don't `require('semver')` to allow this script to be run as a npm
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* 'preinstall' hook, at which point no dependencies have been installed.
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*/
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function parseSemver(version) {
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const match = /v?(\d+)\.(\d+).(\d+)/.exec(version);
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if (match == null) {
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throw new Error(`Invalid semver version: ${version}`);
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}
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const [, major, minor, patch] = match;
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return [parseInt(major, 10), parseInt(minor, 10), parseInt(patch, 10)];
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}
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function semverGte(v1, v2) {
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let v1Array = parseSemver(v1);
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let v2Array = parseSemver(v2);
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for (let i = 0; i < 3; i++) {
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if (v1Array[i] < v2Array[i]) {
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return false;
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} else if (v1Array[i] > v2Array[i]) {
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return true;
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}
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}
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return true;
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}
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function checkNpmVersion() {
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const execSync = require('child_process').execSync;
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const npmVersion = execSync('npm --version').toString().trim();
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const requiredVersion = '6.9.0';
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if (!semverGte(npmVersion, requiredVersion)) {
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// In case you take issue with the error message below:
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// "At this point, however, your 'npm-shrinkwrap.json' file has
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// already been damaged"
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// ... and think: "why not add the check to the 'preinstall' hook?",
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// the reason is that it would unnecessarily prevent end users from
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// using npm v6.4.1 that ships with Node 8. (It is OK for the
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// shrinkwrap file to get damaged if it is not going to be reused.)
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console.error(`\
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-------------------------------------------------------------------------------
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Error: npm version '${npmVersion}' detected. Please upgrade to npm v${requiredVersion} or later
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because of a bug that causes the 'npm-shrinkwrap.json' file to be damaged.
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At this point, however, your 'npm-shrinkwrap.json' file has already been
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damaged. Please revert it to the master branch state with a command such as:
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"git checkout master -- npm-shrinkwrap.json"
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Then re-run "npm install" using npm version ${requiredVersion} or later.
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-------------------------------------------------------------------------------`);
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process.exit(1);
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}
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}
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checkNpmVersion();
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