for (const stackItem of executedFunctions) {
        const {line, column, SourceURL} = stackItem;
        const generatedLine = line + this.options.inputLineStart;
        const generatedColumn = column + this.options.inputColumnStart;
        const originalPosition = this.getOriginalPositionDetailsFor(
          generatedLine,
          generatedColumn,
          this.parseFileName(SourceURL || ''),
        );
        symbolicatedTrace.push(originalPosition);
      }
Symbolicates heap alloction stacks in a Chrome-formatted heap
snapshot/timeline.
Line and column offsets in options (both input and output) are _ignored_,
because this format has a well-defined convention (1-based lines and
columns).