Function transformDefaultParams

src/transform/defaultParam/index.js:21–44

(fn)

}

function transformDefaultParams(fn) {
  const detectedDefaults = findDefaults(fn.body.body);

  fn.params = fn.params.map((param, i) => {
    // Ignore params that use destructuring or already have a default
    if (param.type !== 'Identifier') {
      return param;
    }

    const detected = detectedDefaults[param.name];
    // Transform when default value detected
    // and default does not contain this or any of the remaining parameters
    if (detected && !containsParams(detected.value, remainingParams(fn, i))) {
      multiReplaceStatement({
        parent: fn.body,
        node: detected.node,
        replacements: []
      });
      return withDefault(param, detected.value);
    }

    return param;
  });
}

function withDefault(param, value) {
  return {