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CLI: Add Yarn workspaces support for init command (#9104)

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CLI: Add Yarn workspaces support for init command
This commit is contained in:
Michael Shilman 2019-12-11 00:32:24 +08:00 committed by GitHub
commit 5e7c040e1a
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3 changed files with 8 additions and 4 deletions
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2
lib/cli/README.md
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@ -23,7 +23,7 @@ See the command-line help with `-h` for details.
## [Yarn](https://github.com/yarnpkg/yarn) support
The CLI supports yarn. If you have installed yarn in your system, it'll detect it and use `yarn` instead of `npm`.
The CLI supports yarn. If you have installed yarn in your system and your project has `yarn.lock` file, it'll detect it and use `yarn` instead of `npm`.
If you don't want to use `yarn` always you can use the `--use-npm` option like this:

9
lib/cli/lib/has_yarn.js
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@ -1,12 +1,15 @@
import { sync as spawnSync } from 'cross-spawn';
import path from 'path';
import fs from 'fs';
import findUp from 'find-up';
export default function hasYarn() {
const yarnAvailable = spawnSync('yarn', ['--version'], { silent: true });
const npmAvailable = spawnSync('npm', ['--version'], { silent: true });
const yarnLockPath = path.resolve('yarn.lock');
if ((fs.existsSync(yarnLockPath) || npmAvailable.status !== 0) && yarnAvailable.status === 0) {
const lockFile = findUp.sync(['yarn.lock', 'package-lock.json']);
const hasYarnLock = lockFile && path.basename(lockFile) === 'yarn.lock';
if (yarnAvailable.status === 0 && (hasYarnLock || npmAvailable.status !== 0)) {
return true;
}
return false;

1
lib/cli/package.json
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@ -46,6 +46,7 @@
"didyoumean": "^1.2.1",
"envinfo": "^7.5.0",
"esm": "3.2.25",
"find-up": "^4.1.0",
"fs-extra": "^8.0.1",
"inquirer": "^7.0.0",
"jscodeshift": "^0.6.3",