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2.3 KiB
2.3 KiB
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
# 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.
// deno-lint-ignore-file
function foo(): any {
// ...
}
Ignore directive must be placed before first stament or declaration:
// 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.
// 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.
// eslint-ignore-next-line no-empty
while (true) {}
// eslint-ignore-next-line @typescript-eslint/no-explicit-any
function bar(a: any) {
// ...
}