Function toOptionalLiteralMap

packages/compiler/src/render3/partial/util.ts:42–56

(
  object: {[key: string]: T},
  mapper: (value: T) => o.Expression,
)

 * any keys.
 */
export function toOptionalLiteralMap<T>(
  object: {[key: string]: T},
  mapper: (value: T) => o.Expression,
): o.LiteralMapExpr | null {
  const entries = Object.keys(object).map((key) => {
    const value = object[key];
    return {key, value: mapper(value), quoted: true};
  });

  if (entries.length > 0) {
    return o.literalMap(entries);
  } else {
    return null;
  }
}

export function compileDependencies(
  deps: R3DependencyMetadata[] | 'invalid' | null,