Method each

src/common/ast-path.js:162–181

(callback, ...names)

  // callback will be called with a reference to this path object for each
  // element of the array.
  each(callback, ...names) {
    const { stack } = this;
    const { length } = stack;
    let value = stack.at(-1);

    for (const name of names) {
      value = value[name];
      stack.push(name, value);
    }

    try {
      for (let i = 0; i < value.length; ++i) {
        stack.push(i, value[i]);
        callback(this, i, value);
        stack.length -= 2;
      }
    } finally {
      stack.length = length;
    }
  }

  // Similar to AstPath.prototype.each, except that the results of the
  // callback function invocations are stored in an array and returned at