mirror of
https://github.com/denoland/deno.git
synced 2024-12-26 00:59:24 -05:00
123 lines
2.3 KiB
Markdown
123 lines
2.3 KiB
Markdown
|
## Linter
|
||
|
|
|
||
|
|
Deno ships with a built in code linter for JavaScript and TypeScript.
|
||
|
|
|
||
|
|
**Note: linter is a new feature and still unstable thus it requires `--unstable`
|
||
|
|
flag**
|
||
|
|
|
||
|
|
```shell
|
||
|
|
# lint all JS/TS files in the current directory and subdirectories
|
||
|
|
deno lint --unstable
|
||
|
|
# lint specific files
|
||
|
|
deno lint --unstable myfile1.ts myfile2.ts
|
||
|
|
```
|
||
|
|
|
||
|
|
### Available rules
|
||
|
|
|
||
|
|
- `ban-ts-comment`
|
||
|
|
- `ban-untagged-ignore`
|
||
|
|
- `constructor-super`
|
||
|
|
- `for-direction`
|
||
|
|
- `getter-return`
|
||
|
|
- `no-array-constructor`
|
||
|
|
- `no-async-promise-executor`
|
||
|
|
- `no-case-declarations`
|
||
|
|
- `no-class-assign`
|
||
|
|
- `no-compare-neg-zero`
|
||
|
|
- `no-cond-assign`
|
||
|
|
- `no-debugger`
|
||
|
|
- `no-delete-var`
|
||
|
|
- `no-dupe-args`
|
||
|
|
- `no-dupe-keys`
|
||
|
|
- `no-duplicate-case`
|
||
|
|
- `no-empty-character-class`
|
||
|
|
- `no-empty-interface`
|
||
|
|
- `no-empty-pattern`
|
||
|
|
- `no-empty`
|
||
|
|
- `no-ex-assign`
|
||
|
|
- `no-explicit-any`
|
||
|
|
- `no-func-assign`
|
||
|
|
- `no-misused-new`
|
||
|
|
- `no-namespace`
|
||
|
|
- `no-new-symbol`
|
||
|
|
- `no-obj-call`
|
||
|
|
- `no-octal`
|
||
|
|
- `no-prototype-builtins`
|
||
|
|
- `no-regex-spaces`
|
||
|
|
- `no-setter-return`
|
||
|
|
- `no-this-alias`
|
||
|
|
- `no-this-before-super`
|
||
|
|
- `no-unsafe-finally`
|
||
|
|
- `no-unsafe-negation`
|
||
|
|
- `no-with`
|
||
|
|
- `prefer-as-const`
|
||
|
|
- `prefer-namespace-keyword`
|
||
|
|
- `require-yield`
|
||
|
|
- `triple-slash-reference`
|
||
|
|
- `use-isnan`
|
||
|
|
- `valid-typeof`
|
||
|
|
|
||
|
|
### Ignore directives
|
||
|
|
|
||
|
|
#### Files
|
||
|
|
|
||
|
|
To ignore whole file `// deno-lint-ignore-file` directive should placed at the
|
||
|
|
top of the file.
|
||
|
|
|
||
|
|
```ts
|
||
|
|
// deno-lint-ignore-file
|
||
|
|
|
||
|
|
function foo(): any {
|
||
|
|
// ...
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
Ignore directive must be placed before first stament or declaration:
|
||
|
|
|
||
|
|
```ts
|
||
|
|
// Copyright 2020 the Deno authors. All rights reserved. MIT license.
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Some JS doc
|
||
|
|
**/
|
||
|
|
|
||
|
|
// deno-lint-ignore-file
|
||
|
|
|
||
|
|
import { bar } from "./bar.js";
|
||
|
|
|
||
|
|
function foo(): any {
|
||
|
|
// ...
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Diagnostics
|
||
|
|
|
||
|
|
To ignore certain diagnostic `// deno-lint-ignore <codes...>` directive should
|
||
|
|
be placed before offending line. Specifying ignored rule name is required.
|
||
|
|
|
||
|
|
```ts
|
||
|
|
// deno-lint-ignore no-explicit-any
|
||
|
|
function foo(): any {
|
||
|
|
// ...
|
||
|
|
}
|
||
|
|
|
||
|
|
// deno-lint-ignore no-explicit-any explicit-function-return-type
|
||
|
|
function bar(a: any) {
|
||
|
|
// ...
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
To provide some compatibility with ESLint `deno lint` also supports
|
||
|
|
`// eslint-ignore-next-line` directive. Just like in `// deno-lint-ignore` it's
|
||
|
|
required to specify ignored rule name is required.
|
||
|
|
|
||
|
|
```ts
|
||
|
|
// eslint-ignore-next-line no-empty
|
||
|
|
while (true) {}
|
||
|
|
|
||
|
|
// eslint-ignore-next-line @typescript-eslint/no-explicit-any
|
||
|
|
function bar(a: any) {
|
||
|
|
// ...
|
||
|
|
}
|
||
|
|
```
|