我把一个ts文件转js时为什么node_modules/@types/mocha/index.d.ts文件会报错，这不是自带的标准文件吗？
node_modules/@types/mocha/index.d.ts:2650:13 - error TS2403: Subsequent variable declarations must have the same type. Variable 'beforeEach' must be of type 'Lifecycle', but here has type 'HookFunction'.
2650 declare var beforeEach: Mocha.HookFunction;
~~~~~~~~~~
node_modules/@types/jest/index.d.ts:34:13
34 declare var beforeEach: jest.Lifecycle;
~~~~~~~~~~
'beforeEach' was also declared here.
node_modules/@types/mocha/index.d.ts:2668:13 - error TS2403: Subsequent variable declarations must have the same type. Variable 'afterEach' must be of type 'Lifecycle', but here has type 'HookFunction'.
2668 declare var afterEach: Mocha.HookFunction;
~~~~~~~~~
node_modules/@types/jest/index.d.ts:36:13
36 declare var afterEach: jest.Lifecycle;
~~~~~~~~~
'afterEach' was also declared here.
node_modules/@types/mocha/index.d.ts:2684:13 - error TS2403: Subsequent variable declarations must have the same type. Variable 'describe' must be of type 'Describe', but here has type 'SuiteFunction'.
2684 declare var describe: Mocha.SuiteFunction;
~~~~~~~~
node_modules/@types/jest/index.d.ts:37:13
37 declare var describe: jest.Describe;
~~~~~~~~
'describe' was also declared here.
node_modules/@types/mocha/index.d.ts:2705:13 - error TS2403: Subsequent variable declarations must have the same type. Variable 'xdescribe' must be of type 'Describe', but here has type 'PendingSuiteFunction'.
2705 declare var xdescribe: Mocha.PendingSuiteFunction;
~~~~~~~~~
node_modules/@types/jest/index.d.ts:39:13
39 declare var xdescribe: jest.Describe;
~~~~~~~~~
'xdescribe' was also declared here.
node_modules/@types/mocha/index.d.ts:2719:13 - error TS2403: Subsequent variable declarations must have the same type. Variable 'it' must be of type 'It', but here has type 'TestFunction'.
2719 declare var it: Mocha.TestFunction;
~~
node_modules/@types/jest/index.d.ts:40:13
40 declare var it: jest.It;
~~
'it' was also declared here.
node_modules/@types/mocha/index.d.ts:2733:13 - error TS2403: Subsequent variable declarations must have the same type. Variable 'test' must be of type 'It', but here has type 'TestFunction'.
2733 declare var test: Mocha.TestFunction;
~~~~
node_modules/@types/jest/index.d.ts:43:13
43 declare var test: jest.It;
~~~~
'test' was also declared here.
node_modules/@types/mocha/index.d.ts:2740:13 - error TS2403: Subsequent variable declarations must have the same type. Variable 'xit' must be of type 'It', but here has type 'PendingTestFunction'.
2740 declare var xit: Mocha.PendingTestFunction;
~~~
node_modules/@types/jest/index.d.ts:42:13
42 declare var xit: jest.It;
~~~
'xit' was also declared here.
Found 7 errors in the same file, starting at: node_modules/@types/mocha/index.d.ts:2650
