Function getPipeDef

packages/core/src/render3/pipe.ts:92–117

* Searches the pipe registry for a pipe with the given name. If one is found, * returns the pipe. Otherwise, an error is thrown because the pipe cannot be resolved. * * @param name Name of pipe to resolve * @param registry Full list of available pipes * @returns Matching PipeDef

(name: string, registry: PipeDefList | null)

 * @returns Matching PipeDef
 */
function getPipeDef(name: string, registry: PipeDefList | null): PipeDef<any> | undefined {
  if (registry) {
    if (ngDevMode) {
      const pipes = registry.filter((pipe) => pipe.name === name);
      // TODO: Throw an error in the next major
      if (pipes.length > 1) {
        console.warn(
          formatRuntimeError(
            RuntimeErrorCode.MULTIPLE_MATCHING_PIPES,
            getMultipleMatchingPipesMessage(name),
          ),
        );
      }
    }
    for (let i = registry.length - 1; i >= 0; i--) {
      const pipeDef = registry[i];
      if (name === pipeDef.name) {
        return pipeDef;
      }
    }
  }
  if (ngDevMode) {
    throw new RuntimeError(RuntimeErrorCode.PIPE_NOT_FOUND, getPipeNotFoundErrorMessage(name));
  }
  return;
}

/**
 * Generates a helpful error message for the user when multiple pipes match the name.