Function extract

packages/compiler/test/i18n/extractor_merger_spec.ts:704–726

(
  html: string,
  implicitTags: string[] = [],
  implicitAttrs: {[k: string]: string[]} = {},
)

}

function extract(
  html: string,
  implicitTags: string[] = [],
  implicitAttrs: {[k: string]: string[]} = {},
): [string[], string, string, string][] {
  const result = extractMessages(
    parseHtml(html),
    implicitTags,
    implicitAttrs,
    /* preserveSignificantWhitespace */ true,
  );

  if (result.errors.length > 0) {
    throw new Error(`unexpected errors: ${result.errors.join('\n')}`);
  }

  return result.messages.map((message) => [
    serializeI18nNodes(message.nodes),
    message.meaning,
    message.description,
    message.id,
  ]) as [string[], string, string, string][];
}

function extractErrors(
  html: string,