env-linter

Ensures that all developers on your project use the same, secure LTS version of node, install dependencies in an unambiguous manner and utilize githooks.

Usage example

Feel free to use env-linter in any way that makes sense for your project. Here is an example of how env-linter could be applied as part of your package.json:

{
  "postinstall": "env-linter -s -se -d -vs 'node=16.x.x,npm=8.x.x'",
  "prestart": "env-linter -h -vs 'node=16.x.x,npm=8.x.x'",
  "lint-staged": {
    "**/package.json": ["env-linter -s -d"]
  }
}

You can skip all env-linter checks by using the environment variable ENV_LINTER_SKIP=true. This could be useful on certain CI environments which are not automatically detected by env-linter.

API usage

const { api } = require('env-linter');

await api({
  versions: 'node=16.x.x,npm=8.x.x',
  hooksInstalled: true,
  saveExact: true,
  dependenciesExactVersion: true,
  lts: true,
  security: true,
});

Options

-vs, --versions [string]

Checks the installed versions of global packages or programs like node, npm, yo, etc. against a required version. For example calling env-linter --versions 'node=16.x.x' will ensure that version 16 of node is being used. Multiple versions can be checked by separating them with a comma (eg. --versions 'node=16.x.x,npm=8.x.x,yo=4.x.x'). env-linter will stop any further process-execution if a package or program does not satisfy the required version.

Calling env-linter with --versions but without any arguments will compare the installed node-version with the node-version from the .node-version file.

In any case, the used node version is compared to the list of official node-releases and process-execution is stopped if the used npm version is older than the npm version that node comes with.

-h, --hooksInstalled

Checks if git-hooks are installed (i.e. husky installed). env-linter will stop any further process-execution if git-hooks are not installed.

-se, --security

Checks if the used node version is considered secure according to the current list of node releases. If a newer node-version is available which was released due to a security concern, env-linter will stop any further process-execution. Find out more about the security-flag in this github issue.

-s, --saveExact

Checks if the npm option save-exact is enabled, either through a .npmrc file in the project or in the user-directory. env-linter will stop any further process-execution if save-exact is disabled.

-d, --dependenciesExactVersion

Checks if the version definitions of the dependencies and devDependencies in the package.json (or in a monorepository all available packages) are fitting our standards, which means; no approximate versions eg. tilde ~ or caret ^, no star * wildcard and no tarball embeds via https://*.

-l, --lts

Checks if the used node version is a LTS version. Here is some more information why it might be a good idea to use an LTS version.

Contributing

You want to contribute to the env-linter? That's awesome!

License

MIT License

License

merkle-open/env-linter

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