断点

  • setBreakpoint(), sb(): 在当前行上设置断点
  • setBreakpoint(line), sb(line): 在特定行上设置断点
  • setBreakpoint('fn()'), sb(...):
  • setBreakpoint('script.js', 1), sb(...): 在 script.js 的第一行上设置断点
  • clearBreakpoint('script.js', 1), cb(...): 清除 script.js 中第 1 行上的断点

还可以在尚未加载的文件（模块）中设置断点：

$ node inspect main.js
< Debugger listening on ws://127.0.0.1:9229/4e3db158-9791-4274-8909-914f7facf3bd
< For help, see: https://nodejs.org/en/docs/inspector
< Debugger attached.
Break on start in main.js:1
> 1 (function (exports, require, module, __filename, __dirname) { const mod = require('./mod.js');
  2 mod.hello();
  3 mod.hello();
debug> setBreakpoint('mod.js', 22)
Warning: script 'mod.js' was not loaded yet.
debug> c
break in mod.js:22
 20 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 21
>22 exports.hello = function() {
 23   return 'hello from module';
 24 };
debug>
  • setBreakpoint(), sb(): Set breakpoint on current line
  • setBreakpoint(line), sb(line): Set breakpoint on specific line
  • setBreakpoint('fn()'), sb(...): Set breakpoint on a first statement in functions body
  • setBreakpoint('script.js', 1), sb(...): Set breakpoint on first line of script.js
  • clearBreakpoint('script.js', 1), cb(...): Clear breakpoint in script.js on line 1

It is also possible to set a breakpoint in a file (module) that is not loaded yet:

$ node inspect main.js
< Debugger listening on ws://127.0.0.1:9229/4e3db158-9791-4274-8909-914f7facf3bd
< For help, see: https://nodejs.org/en/docs/inspector
< Debugger attached.
Break on start in main.js:1
> 1 (function (exports, require, module, __filename, __dirname) { const mod = require('./mod.js');
  2 mod.hello();
  3 mod.hello();
debug> setBreakpoint('mod.js', 22)
Warning: script 'mod.js' was not loaded yet.
debug> c
break in mod.js:22
 20 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 21
>22 exports.hello = function() {
 23   return 'hello from module';
 24 };
debug>