CODEWITHSUNDEEP
npmyarnpkg
Lin Du
Lin Du

Reputation: 102237

how to convert package-lock.json to yarn.lock?

I have an project with package-lock.json file.

Now, I want to generate yarn.lock file based on package-lock.json file or existed node_modules of project.

How can I do this? thanks.

Upvotes: 37

Views: 26863

Answers (3)

Lin Du
Lin Du

Reputation: 102237

You can use yarn import to generate yarn.lock file from an existing npm-installed node_modules folder.

yarn import aims to alleviate this challenge by generating a yarn.lock file in one of two ways:

  1. Using the dependency tree in an existing package-lock.json file created by npm install
  2. If no such file exists, using the versions found inside node_modules according to normal require.resolve() resolution rules.

For example:

☁  api [develop] ⚡  yarn import   
yarn import v1.17.3
info found npm package-lock.json, converting to yarn.lock
warning jest > jest-cli > jest-config > jest-environment-jsdom > jsdom > [email protected]: use String.prototype.padStart()
success Saved lockfile.
✨  Done in 21.56s.

Upvotes: 72

hlovdal
hlovdal

Reputation: 28180

You can use the tool synp to convert back and forth:

synp --source-file yarn.lock            # will create package-lock.json
synp --source-file package-lock.json    # will create yarn.lock

Upvotes: 7

WallSky Blue
WallSky Blue

Reputation: 210

as of yarn 1.7.0 (2018-06-04) you can use yarn import to convert npm package-lock.json to yarn.lock instead of having to npm install first for node_modules and tell yarn to take a looks at that

https://yarnpkg.com/lang/en/docs/migrating-from-npm/

https://yarnpkg.com/blog/2018/06/04/yarn-import-package-lock/

Upvotes: 0

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