问题描述
我的项目由一个非常简单的index.ts
组成:
const answer: 42 = 43;
如果我对其进行编译,则会出现预期的类型错误(带有颜色;此处未显示):
$ tsc
index.ts:1:7 - error TS2322: Type '43' is not assignable to type '42'.
1 const answer: 42 = 43;
~~~~~~
Found 1 error.
比方说,我想grep输入类型错误:
$ tsc | grep "const answer"
我没有结果。难怪:
$ tsc | wc -l
1
$ tsc | cat
index.ts(1,7): error TS2322: Type '43' is not assignable to type '42'.
重定向没有帮助:
$ tsc 2>&1 | wc -l
1
$ tsc 2>&1 | cat
index.ts(1,7): error TS2322: Type '43' is not assignable to type '42'.
如何在终端中访问tsc
的完整输出?
解决方法
使用--pretty
标志:
$ tsc --pretty | grep "const answer"
1 const answer: 42 = 43;
(请注意,"--pretty
output is not meant to be parsed",请谨慎使用。)
它是这样的:
$ tsc --pretty false
index.ts(1,7): error TS2322: Type '43' is not assignable to type '42'.
$ tsc --pretty true
index.ts:1:7 - error TS2322: Type '43' is not assignable to type '42'.
1 const answer: 42 = 43;
~~~~~~
Found 1 error.
默认启用,"unless piping to another program or redirecting output to a file"。
您也可以在tsconfig.json
中指定它:
{
"compilerOptions": {
"pretty": true,},}