mirror of
https://github.com/balena-io/balena-cli.git
synced 2024-12-24 07:46:39 +00:00
88 lines
3.5 KiB
JavaScript
Executable File
88 lines
3.5 KiB
JavaScript
Executable File
#!/usr/bin/env node
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// ****************************************************************************
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// THIS IS FOR DEV PURPOSES ONLY AND WILL NOT BE PART OF THE PUBLISHED PACKAGE
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// Before opening a PR you should build and test your changes using bin/balena
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// ****************************************************************************
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// We boost the threadpool size as ext2fs can deadlock with some
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// operations otherwise, if the pool runs out.
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process.env.UV_THREADPOOL_SIZE = '64';
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// Note on `fast-boot2`: We do not use `fast-boot2` with `balena-dev` because:
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// * fast-boot2's cacheKiller option is configured to include the timestamps of
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// the package.json and npm-shrinkwrap.json files, to avoid unexpected CLI
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// behavior when changes are made to dependencies during development. This is
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// generally a good thing, however, `balena-dev` (a few lines below) edits
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// `package.json` to modify oclif paths, and this results in cache
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// invalidation and a performance hit rather than speedup.
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// * Even if the timestamps are removed from cacheKiller, so that there is no
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// cache invalidation, fast-boot's speedup is barely noticeable when ts-node
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// is used, e.g. 1.43s vs 1.4s when running `balena version`.
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// * `fast-boot` causes unexpected behavior when used with `npm link` or
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// when the `node_modules` folder is manually modified (affecting transitive
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// dependencies) during development (e.g. bug investigations). A workaround
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// is to use `balena-dev` without `fast-boot`. See also notes in
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// `CONTRIBUTING.md`.
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const path = require('path');
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const rootDir = path.join(__dirname, '..');
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// Allow balena-dev to work with oclif by temporarily
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// pointing oclif config options to src/ instead of build/
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modifyOclifPaths();
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// Undo changes on exit
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process.on('exit', function () {
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modifyOclifPaths(true);
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});
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// Undo changes in case of ctrl-c
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process.on('SIGINT', function () {
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modifyOclifPaths(true);
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// Note process exit here will interfere with commands that do their own SIGINT handling,
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// but without it commands can not be exited.
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// So currently using balena-dev does not guarantee proper exit behaviour when using ctrl-c.
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// Ideally a better solution is needed.
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process.exit();
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});
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// Set the desired es version for downstream modules that support it
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require('@balena/es-version').set('es2018');
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// Note: before ts-node v6.0.0, 'transpile-only' (no type checking) was the
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// default option. We upgraded ts-node and found that adding 'transpile-only'
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// was necessary to avoid a mysterious 'null' error message. On the plus side,
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// it is supposed to run faster. We still benefit from type checking when
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// running 'npm run build'.
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require('ts-node').register({
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project: path.join(rootDir, 'tsconfig.json'),
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transpileOnly: true,
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});
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require('../src/app').run(undefined, { dir: __dirname, development: true });
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// Modify package.json oclif paths from build/ -> src/, or vice versa
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function modifyOclifPaths(revert) {
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const fs = require('fs');
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const packageJsonPath = path.join(rootDir, 'package.json');
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const packageJson = fs.readFileSync(packageJsonPath, 'utf8');
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const packageObj = JSON.parse(packageJson);
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if (!packageObj.oclif) {
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return;
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}
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let oclifSectionText = JSON.stringify(packageObj.oclif);
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if (!revert) {
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oclifSectionText = oclifSectionText.replace(/\/build\//g, '/src/');
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} else {
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oclifSectionText = oclifSectionText.replace(/\/src\//g, '/build/');
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}
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packageObj.oclif = JSON.parse(oclifSectionText);
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fs.writeFileSync(
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packageJsonPath,
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`${JSON.stringify(packageObj, null, 2)}\n`,
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'utf8',
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);
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}
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