Method [customInspectSymbol]

lib/internal/debugger/inspect_repl.js:474–508

(depth, options)

    }

    [customInspectSymbol](depth, options) {
      const { scriptId, lineNumber, columnNumber, delta, scriptSource } = this;
      const start = MathMax(1, lineNumber - delta + 1);
      const end = lineNumber + delta + 1;

      const lines = StringPrototypeSplit(scriptSource, '\n');
      return ArrayPrototypeJoin(
        ArrayPrototypeMap(
          ArrayPrototypeSlice(lines, start - 1, end),
          (lineText, offset) => {
            const i = start + offset;
            const isCurrent = i === (lineNumber + 1);

            const markedLine = isCurrent ?
              markSourceColumn(lineText, columnNumber, options.colors) :
              lineText;

            let isBreakpoint = false;
            ArrayPrototypeForEach(knownBreakpoints, ({ location }) => {
              if (!location) return;
              if (scriptId === location.scriptId &&
              i === (location.lineNumber + 1)) {
                isBreakpoint = true;
              }
            });

            let prefixChar = ' ';
            if (isCurrent) {
              prefixChar = '>';
            } else if (isBreakpoint) {
              prefixChar = '*';
            }
            return `${leftPad(i, prefixChar, end)} ${markedLine}`;
          }), '\n');
    }
  }

  async function getSourceSnippet(location, delta = 5) {