Closed
Description
This issue was initially reported here: eslint/typescript-eslint-parser#557
What version of TypeScript are you using?
3.1.6
What version of typescript-eslint-parser are you using?
21.0.1
What code were you trying to parse?
interface IteratorCallback<Subject, Key, Value> {
(this: Subject, value: Value, key: Key, subject: Subject): void | false
}
function eachr<Value>(subject: Array<Value>, callback: IteratorCallback<typeof subject, number, Value>): typeof subject;
function eachr<Key, Value>(subject: Map<Key, Value>, callback: IteratorCallback<typeof subject, Key, Value>): typeof subject;
function eachr<Object extends object, Key extends keyof Object>(subject: Object, callback: IteratorCallback<Object, Key, Object[Key]>): Object;
function eachr<Object extends object, Key, Value> (subject: Object | Array<Value> | Map<Key, Value>, callback: IteratorCallback<typeof subject, Key, Value>): typeof subject {
return subject
}
export default eachrWhat did you expect to happen?
Just get back:
7:102 warning 'callback' is defined but never used no-unused-vars
What happened?
Got back no-undef errors:
4:80 error 'subject' is not defined no-undef
4:113 error 'subject' is not defined no-undef
5:88 error 'subject' is not defined no-undef
5:118 error 'subject' is not defined no-undef
7:102 warning 'callback' is defined but never used no-unused-vars
Here is the .eslintrc:
{ extends: [ 'eslint:recommended' ],
plugins: [ 'typescript', 'babel' ],
parserOptions:
{ ecmaFeatures: { jsx: false },
sourceType: 'module',
ecmaVersion: 5 },
env:
{ es6: false,
node: true,
browser: true,
commonjs: true,
'shared-node-browser': true },
rules:
{ 'no-cond-assign': [ 2, 'always' ],
'no-console': 1,
'no-constant-condition': 1,
'no-control-regex': 2,
'no-debugger': 1,
'no-dupe-args': 2,
'no-dupe-keys': 2,
'no-duplicate-case': 2,
'no-empty': 0,
'no-empty-character-class': 2,
'no-ex-assign': 2,
'no-extra-boolean-cast': 2,
'no-extra-parens': 0,
'no-extra-semi': 2,
'no-func-assign': 2,
'no-inner-declarations': 2,
'no-invalid-regexp': 2,
'no-irregular-whitespace': 2,
'no-obj-calls': 2,
'no-prototype-builtins': 0,
'no-regex-spaces': 2,
'no-sparse-arrays': 2,
'no-template-curly-in-string': 1,
'no-unexpected-multiline': 2,
'no-unreachable': 2,
'no-unsafe-finally': 2,
'no-unsafe-negation': 2,
'use-isnan': 2,
'valid-jsdoc':
[ 2,
{ requireParamDescription: false,
requireReturnDescription: false } ],
'valid-typeof': 2,
'accessor-pairs': 0,
'array-callback-return': 2,
'block-scoped-var': 0,
'class-methods-use-this': 1,
complexity: 0,
'consistent-return': 0,
curly: [ 2, 'multi-line' ],
'default-case': 2,
'dot-location': [ 2, 'property' ],
'dot-notation': 2,
eqeqeq: [ 2, 'allow-null' ],
'guard-for-in': 2,
'no-alert': 1,
'no-caller': 2,
'no-case-declarations': 2,
'no-div-regex': 2,
'no-else-return': 0,
'no-empty-function': 0,
'no-empty-pattern': 2,
'no-eq-null': 0,
'no-eval': 2,
'no-extend-native': 2,
'no-extra-bind': 2,
'no-extra-label': 2,
'no-fallthrough': 2,
'no-floating-decimal': 2,
'no-global-assign': 2,
'no-implicit-coercion': 2,
'no-implicit-globals': 2,
'no-implied-eval': 2,
'no-invalid-this': 0,
'no-iterator': 2,
'no-labels': 2,
'no-lone-blocks': 2,
'no-loop-func': 2,
'no-magic-numbers': 0,
'no-multi-spaces': 0,
'no-multi-str': 2,
'no-new-func': 2,
'no-new-wrappers': 2,
'no-new': 2,
'no-octal-escape': 2,
'no-octal': 2,
'no-param-reassign': 0,
'no-proto': 2,
'no-redeclare': 2,
'no-restricted-properties': 0,
'no-return-assign': 2,
'no-script-url': 2,
'no-self-assign': 2,
'no-self-compare': 2,
'no-sequences': 2,
'no-throw-literal': 2,
'no-unmodified-loop-condition': 1,
'no-unused-expressions': 2,
'no-unused-labels': 2,
'no-useless-call': 2,
'no-useless-concat': 2,
'no-useless-escape': 2,
'no-void': 2,
'no-warning-comments': [ 1, { terms: [ 'todo', 'fixme' ], location: 'anywhere' } ],
'no-with': 2,
radix: 2,
'vars-on-top': 0,
'wrap-iife': 2,
yoda: [ 2, 'never' ],
strict: [ 2, 'global' ],
'init-declarations': 0,
'no-catch-shadow': 0,
'no-delete-var': 2,
'no-label-var': 2,
'no-restricted-globals': 0,
'no-shadow-restricted-names': 2,
'no-shadow': 0,
'no-undef-init': 2,
'no-undef': 2,
'no-undefined': 2,
'no-unused-vars': 1,
'no-use-before-define': 2,
'callback-return': 0,
'global-require': 0,
'handle-callback-err': 2,
'no-mixed-requires': 2,
'no-new-require': 2,
'no-path-concat': 2,
'no-process-env': 0,
'no-process-exit': 0,
'no-restricted-modules': 0,
'no-sync': 1,
'array-bracket-spacing': [ 2, 'never' ],
'block-spacing': [ 2, 'always' ],
'brace-style': [ 2, 'stroustrup', { allowSingleLine: true } ],
camelcase: 2,
'comma-dangle': [ 2, 'never' ],
'comma-spacing': [ 2, { before: false, after: true } ],
'comma-style': [ 2, 'last' ],
'computed-property-spacing': [ 2, 'never' ],
'consistent-this': 0,
'eol-last': 2,
'func-call-spacing': [ 2, 'never' ],
'func-name-matching': 0,
'func-names': 0,
'func-style': [ 1, 'declaration' ],
'id-blacklist': 0,
'id-length': 0,
'id-match': 0,
indent:
[ 2,
'tab',
{ SwitchCase: 1,
VariableDeclarator: 0,
outerIIFEBody: 1,
MemberExpression: 1,
FunctionDeclaration: { body: 1, parameters: 0 },
FunctionExpression: { body: 1, parameters: 0 } } ],
'jsx-quotes': [ 2, 'prefer-double' ],
'key-spacing': [ 2, { beforeColon: false, afterColon: true } ],
'keyword-spacing': [ 2 ],
'line-comment-position': 0,
'linebreak-style': [ 2, 'unix' ],
'lines-around-comment': [ 2, { beforeBlockComment: true, allowBlockStart: true } ],
'lines-around-directive': [ 2, { before: 'never', after: 'always' } ],
'max-depth': 0,
'max-len': 0,
'max-lines': 0,
'max-nested-callbacks': 0,
'max-params': [ 1, 4 ],
'max-statements-per-line': [ 1, { max: 1 } ],
'max-statements': 0,
'multiline-ternary': 0,
'new-cap': 0,
'new-parens': 2,
'newline-after-var': 0,
'newline-per-chained-call': 0,
'no-array-constructor': 2,
'no-bitwise': 2,
'no-continue': 0,
'no-inline-comments': 0,
'no-lonely-if': 2,
'no-mixed-operators': 2,
'no-mixed-spaces-and-tabs': 2,
'no-multiple-empty-lines': 0,
'no-negated-condition': 0,
'no-nested-ternary': 0,
'no-new-object': 2,
'no-plusplus': 0,
'no-restricted-syntax': 0,
'no-tabs': 0,
'no-ternary': 0,
'no-trailing-spaces': 2,
'no-underscore-dangle': 0,
'no-unneeded-ternary': 2,
'no-whitespace-before-property': 2,
'object-curly-newline': [ 0, { multiline: true } ],
'object-curly-spacing': 0,
'one-var': 0,
'one-var-declaration-per-line': 0,
'operator-assignment': [ 2, 'always' ],
'operator-linebreak': 0,
'padded-blocks': 0,
'quote-props': [ 2, 'consistent-as-needed' ],
quotes: [ 2, 'single', 'avoid-escape' ],
'require-jsdoc': 0,
'semi-spacing': [ 2, { before: false, after: true } ],
semi: [ 2, 'never' ],
'sort-keys': 0,
'sort-vars': 0,
'space-before-blocks': [ 2, 'always' ],
'space-before-function-paren': [ 2, 'always' ],
'space-in-parens': 0,
'space-infix-ops': 2,
'space-unary-ops': 2,
'spaced-comment': 2,
'unicode-bom': [ 2, 'never' ],
'wrap-regex': 2,
'arrow-body-style': [ 2, 'as-needed' ],
'arrow-parens': [ 2, 'always' ],
'arrow-spacing': 2,
'constructor-super': 2,
'generator-star-spacing': [ 2, 'before' ],
'no-class-assign': 2,
'no-confusing-arrow': 2,
'no-const-assign': 2,
'no-dupe-class-members': 2,
'no-duplicate-imports': 1,
'no-new-symbol': 2,
'no-restricted-imports': 0,
'no-this-before-super': 2,
'no-useless-computed-key': 2,
'no-useless-constructor': 2,
'no-useless-rename': 2,
'no-var': 0,
'object-shorthand': [ 2, 'never' ],
'prefer-arrow-callback': 0,
'prefer-const': 0,
'prefer-numeric-literals': 2,
'prefer-reflect': 0,
'prefer-rest-params': 0,
'prefer-spread': 0,
'prefer-template': 0,
'require-yield': 2,
'rest-spread-spacing': [ 2, 'never' ],
'sort-imports': 0,
'symbol-description': 2,
'template-curly-spacing': [ 2, 'never' ],
'yield-star-spacing': [ 2, 'both' ],
'babel/new-cap': 2,
'babel/object-curly-spacing': 0 },
parser: 'typescript-eslint-parser' }
The dev deps:
"devDependencies": {
"@babel/cli": "^7.1.5",
"@babel/core": "^7.1.6",
"@babel/plugin-proposal-class-properties": "^7.1.0",
"@babel/plugin-proposal-object-rest-spread": "^7.0.0",
"@babel/preset-env": "^7.1.6",
"@babel/preset-typescript": "^7.1.0",
"eslint": "^5.9.0",
"eslint-plugin-babel": "^5.3.0",
"eslint-plugin-typescript": "^0.13.0",
"typescript": "^3.1.6",
"typescript-eslint-parser": "^21.0.1"
},
And the eslint run:
npx eslint --fix './source/**