Function normalizeFormatOptions

src/main/normalize-format-options.js:22–97

(options, opts = {})

// Copy options and fill in default values.
async function normalizeFormatOptions(options, opts = {}) {
  const rawOptions = { ...options };

  if (!rawOptions.parser) {
    if (!rawOptions.filepath) {
      throw new UndefinedParserError(
        "No parser and no file path given, couldn't infer a parser.",
      );
    }

    rawOptions.parser = inferParser(rawOptions, {
      physicalFile: rawOptions.filepath,
    });

    if (!rawOptions.parser) {
      throw new UndefinedParserError(
        `No parser could be inferred for file "${rawOptions.filepath}".`,
      );
    }
  }

  const supportOptions = getSupportInfo({
    plugins: options.plugins,
    showDeprecated: true,
  }).options;

  const defaults = {
    ...formatOptionsHiddenDefaults,
    ...Object.fromEntries(
      supportOptions
        .filter((optionInfo) => optionInfo.default !== undefined)
        .map((option) => [option.name, option.default]),
    ),
  };

  const parserPlugin = getParserPluginByParserName(
    rawOptions.plugins,
    rawOptions.parser,
  );

  const parser = await initParser(parserPlugin, rawOptions.parser);
  rawOptions.astFormat = parser.astFormat;
  rawOptions.locEnd = parser.locEnd;
  rawOptions.locStart = parser.locStart;

  const printerPlugin = parserPlugin.printers?.[parser.astFormat]
    ? parserPlugin
    : getPrinterPluginByAstFormat(rawOptions.plugins, parser.astFormat);
  const printer = await initPrinter(printerPlugin, parser.astFormat);

  rawOptions.printer = printer;
  rawOptions.getVisitorKeys = printer.getVisitorKeys;

  const pluginDefaults = printerPlugin.defaultOptions
    ? Object.fromEntries(
        Object.entries(printerPlugin.defaultOptions).filter(
          ([, value]) => value !== undefined,
        ),