Method findOrigin

lib/internal/source_map/source_map.js:233–252

* @param {number} lineNumber 1-indexed line number in compiled resource call site * @param {number} columnNumber 1-indexed column number in compiled resource call site * @returns {object} representing origin call site if found, or empty object

(lineNumber, columnNumber)

   * @returns {object} representing origin call site if found, or empty object
   */
  findOrigin(lineNumber, columnNumber) {
    const range = this.findEntry(lineNumber - 1, columnNumber - 1);
    if (
      range.originalSource === undefined ||
      range.originalLine === undefined ||
      range.originalColumn === undefined ||
      range.generatedLine === undefined ||
      range.generatedColumn === undefined
    ) {
      return {};
    }
    const lineOffset = lineNumber - range.generatedLine;
    const columnOffset = columnNumber - range.generatedColumn;
    return {
      name: range.name,
      fileName: range.originalSource,
      lineNumber: range.originalLine + lineOffset,
      columnNumber: range.originalColumn + columnOffset,
    };
  }

  /**
   * @override