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jscodeshift-imports

v1.1.0

Published

A JSCodeshift extension with helpers for modifying `import` and `require` statements.

Downloads

8,747

Readme

jscodeshift-imports extension

A JSCodeshift extension which contains helpers for modifying import and require statements.

Setup

Install extension: npm install jscodeshift-imports.

Register the extension with jscodeshift:

const imports = require('jscodeshift-imports');

module.exports = function(fileInfo, api) {
  const {jscodeshift} = api;

  imports.register(jscodeshift, imports.config.CJSBasicRequire);

  // Your transform here.
}

Different configs will be needed based on your code style, this extension comes with two default configs:

You can also provide your own custom config.

API

addImport

This helper allows you to insert require statements into the most appropriate place within a file, it does this in a non destructive way so your codemod will change as little in the file as it can.

Usage:

const imports = require('jscodeshift-imports');

module.exports = function(fileInfo, api) {
  const {jscodeshift} = api;
  const {statement} = jscodeshift.template;

  imports.register(jscodeshift, imports.config.CJSBasicRequire);

  return jscodeshift(file.source)
    .addImport(statement`
      const MyRequireItem = require('MyRequireItem');
    `)
    .toSource();
}

addImport accepts any require or import statement as long as it matches one of the config types.

Note: This transform cannot be trusted. Whilst this implementation works in most cases it can give incorrect whitespace due to limitations in the AST. You will need to manually verify the output after running.