Linting for react-intl components

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0.1.37 years ago7 years agoMinified + gzip package size for eslint-plugin-reactintl in KB


An ESLint Plugin for the react-intl package. This was created initially to check that all instances of FormattedMessage as well as a definable array of custom components have a defaultMessage attribute. It satisfies this requirement with room for growth.


Inside your package, run npm install --save-dev eslint-plugin-reactintl to install and save the plugin as a dev dependency of your package.
Inside .eslintrc.js, add `"reactintl" as a plugin. You can also extend the linter from just checking on the default FormattedMessage` by adding to the components array.
module.exports = {
    "plugins": ["reactintl"],
    "rules": {
        "reactintl/default-message": ['error', {
            "components": [ "AnotherComponentToLint" ],


  • default-message
- ensures a component has defaultMessage and id supplied, unless the properties are added in a spread operator
- define other components you want to apply the same linting on in the component property of the rule options (`[ "AnotherComponentToLint" ]`)
- [documentation](
  • contains-hardcoded-copy
- ensures all nodes do not contain hardcoded copy / string literals.
- not recommended to turn this all the time as it's very intensive, but it will save time in retrospectively adding FormattedMessage components to wrap around strings
- [documentation](


Directory Layout

  • src/lib/index contains the default rules and exports of the module
  • src/lib/rules contains individual rules consumed by the above config


When running npm run build, we transpile all rules and the index from src/ to lib/ in the root.


Spec files are found inline with the source and md document. Run npm run test to run all tests in the package.


Run npm publish to publish the latest version to NPM. Before this complete the prepublish script will run to test and build rules.
This code was based on the eslint-plugin-jsx-a11y code and follows code patterns I enjoyed there. It also consumes jsx-ast-utils, a utility modules for analysing JSX.