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Given this package.json:
{ "name": "yarn-install-fail", "version": "1.0.0", "description": "", "main": "index.js", "scripts": {}, "author": "", "license": "ISC", "dependencies": { "aws-sdk": "2.x.x", "s3-streams": "^0.3.0" } } I can install the dependencies successfully via npm:
$ npm install added 27 packages in 1.844s Yet yarn fails:
$ yarn install yarn install v0.24.5 info No lockfile found. [1/4] Resolving packages... [2/4] Fetching packages... error [email protected]: The engine "node" is incompatible with this module. Expected version "^1.2.0". error Found incompatible module info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command. It appears yarn has trouble installing the library [email protected], yet I assumed it would fallback to install all the dependencies anyway like npm would.
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The yarn install -ignore-engines command will ignore engines check. This command will ensure that yarn does notinstall optional dependencies. This command run yarn install in offline mode. This command will disable interactive prompts, such as when there's an invalid version of a dependency.
Yarn can consume the same package. json format as npm, and can install any package from the npm registry. This will lay out your node_modules folder using Yarn's resolution algorithm that is compatible with the node. js module resolution algorithm.
The Yarn maintainers recommend installing Yarn globally by using the NPM package manager, which is included by default with all Node. js installations. Use the -g flag with npm install to do this: sudo npm install -g yarn.
You can indeed ignore such errors via --ignore-engines:
$ yarn install --ignore-engines yarn install v0.24.5 info No lockfile found. [1/4] Resolving packages... [2/4] Fetching packages... [3/4] Linking dependencies... [4/4] Building fresh packages... success Saved lockfile. Done in 1.41s. This is also documented in the command's help:
$ yarn help | grep -- --ignore --ignore-scripts don't run lifecycle scripts --ignore-platform ignore platform checks --ignore-engines ignore engines check --ignore-optional ignore optional dependencies If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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