Deno linter

NOTE Very much work-in-progress

Supported rules

• ban-ts-ignore
• ban-untagged-todo
• constructor-super
• default-param-last
• eqeqeq
• explicit-function-return-type
• 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-function
• no-empty-interface
• no-empty
• no-eval
• no-ex-assign
• no-explicit-any
• no-func-assign
• no-namespace
• no-new-symbol
• no-obj-call
• no-octal
• no-prototype-builtins
• no-setter-return
• no-sparse-array
• no-throw-literal
• no-unsafe-finally
• no-unsafe-negation
• no-var
• no-with
• prefer-namespace-keyword
• require-yield
• single-var-declarator
• use-isnan
• valid-typeof

Ignores

Only single line ignores are supported:

// deno-lint-ignore noExplicitAny
function foo(): any {
  // ...
}

// deno-lint-ignore noExplicitAny explicitFunctionReturnType
function bar(a: any) {
  // ...
}

Example output

$ ▶ target/debug/examples/dlint ../deno/std/http/server.ts ../deno/std/http/file_server.ts
(no-empty) Empty block statement
  --> ../deno/std/http/server.ts:93:14
   |
93 |       } catch {}
   |               ^^
   |
(no-empty) Empty block statement
   --> ../deno/std/http/server.ts:111:44
    |
111 |     while ((await body.read(buf)) !== null) {}
    |                                             ^^
    |
(no-empty) Empty block statement
   --> ../deno/std/http/server.ts:120:41
    |
120 |   constructor(public listener: Listener) {}
    |                                          ^^
    |
(ban-untagged-todo) TODO should be tagged with (@username) or (#issue)
 --> ../deno/std/http/file_server.ts:5:0
  |
5 | // TODO Stream responses instead of reading them into memory.
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
(ban-untagged-todo) TODO should be tagged with (@username) or (#issue)
 --> ../deno/std/http/file_server.ts:6:0
  |
6 | // TODO Add tests like these:
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
(ban-untagged-todo) TODO should be tagged with (@username) or (#issue)
   --> ../deno/std/http/file_server.ts:137:0
    |
137 | // TODO: simplify this after deno.stat and deno.readDir are fixed
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
(no-empty) Empty block statement
   --> ../deno/std/http/file_server.ts:155:16
    |
155 |     } catch (e) {}
    |                 ^^
    |
Found 7 problems