module() — react Function Reference

Architecture documentation for the module() function in transform-object-assign.js from the react codebase.

Function javascript BabelCompiler Entrypoint

Entity Profile

BabelCompiler→ Entrypoint→ module() — react Function Reference

Dependency Diagram

graph TD
  b3bc4e95_ec99_0ca6_4f66_f87ff1822afd["module()"]
  2cdc6d20_af43_f3f1_403a_fd6bc32674d2["transform-object-assign.js"]
  b3bc4e95_ec99_0ca6_4f66_f87ff1822afd -->|defined in| 2cdc6d20_af43_f3f1_403a_fd6bc32674d2
  style b3bc4e95_ec99_0ca6_4f66_f87ff1822afd fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

scripts/babel/transform-object-assign.js lines 12–54

module.exports = function autoImporter(babel) {
  function getAssignIdent(path, file, state) {
    if (state.id) {
      return state.id;
    }
    state.id = helperModuleImports.addDefault(path, 'shared/assign', {
      nameHint: 'assign',
    });
    return state.id;
  }

  return {
    pre: function () {
      // map from module to generated identifier
      this.id = null;
    },

    visitor: {
      CallExpression: function (path, file) {
        if (/shared(\/|\\)assign/.test(file.filename)) {
          // Don't replace Object.assign if we're transforming shared/assign
          return;
        }
        if (path.get('callee').matchesPattern('Object.assign')) {
          // generate identifier and require if it hasn't been already
          const id = getAssignIdent(path, file, this);
          path.node.callee = id;
        }
      },

      MemberExpression: function (path, file) {
        if (/shared(\/|\\)assign/.test(file.filename)) {
          // Don't replace Object.assign if we're transforming shared/assign
          return;
        }
        if (path.matchesPattern('Object.assign')) {
          const id = getAssignIdent(path, file, this);
          path.replaceWith(id);
        }
      },
    },
  };
};