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tslint.json | prefer-conditional-expression | Recommends to use a conditional expression instead of assigning to the same thing in each branch of an if statement. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["check-else-if"]}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | prefer-const | Requires that variable declarations use `const` instead of `let` and `var` if possible. | {"definitions": {"options": {"type": "array", "items": {"type": "object", "properties": {"destructuring": {"type": "string", "enum": ["all", "any"]}}, "additionalProperties": false}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | prefer-for-of | Recommends a 'for-of' loop over a standard 'for' loop if the index is only used to access the array being iterated. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | prefer-function-over-method | Warns for class methods that do not use 'this'. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["allow-public", "allow-protected"]}, "minItems": 1, "maxItems": 2, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 3, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | prefer-method-signature | Prefer `foo(): void` over `foo: () => void` in interfaces and types. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | prefer-object-spread | Enforces the use of the ES2015 object spread operator over `Object.assign()` where appropriate. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | prefer-switch | Prefer a `switch` statement to an `if` statement with simple `===` comparisons. | {"definitions": {"options": {"type": "array", "items": {"type": "object", "properties": {"min-cases": {"type": "number", "minimum": 0}}, "additionalProperties": false}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | prefer-template | Prefer a template expression over string literal concatenation. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["allow-single-concat"]}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | prefer-while | Prefer while loops instead of for loops without an initializer and incrementor. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "additionalProperties": false}]} |
tslint.json | no-async-without-await | Force functions marked async contain an await or return statement
https://palantir.github.io/tslint/rules/no-async-without-await/ | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "additionalProperties": false}]} |
tslint.json | promise-function-async | Requires any function or method that returns a promise to be marked async. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | quotemark | Requires single or double quotes for string literals. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["single", "double", "jsx-single", "jsx-double", "avoid-escape", "avoid-template"]}, "minItems": 1, "maxItems": 4, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 5, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | radix | Requires the radix parameter to be specified when calling `parseInt`. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | restrict-plus-operands | When adding two variables, operands must both be of type number or of type string. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | return-undefined | Prefer `return;` in void functions and `return undefined;` in value-returning functions. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | semicolon | Enforces consistent semicolon usage at the end of every statement. | {"definitions": {"options": {"type": "array", "items": [{"type": "string", "enum": ["always", "never"]}, {"type": "string", "enum": ["ignore-interfaces", "ignore-bound-class-methods", "strict-bound-class-methods"]}], "minItems": 1, "maxItems": 3}}, "allOf": [{}, {"items": [{"type": "boolean"}, {}, {}], "maxItems": 3, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | space-before-function-paren | Require or disallow a space before function parenthesis | {"definitions": {"options": {"type": "array", "items": {"type": "object", "properties": {"anonymous": {"type": "string", "enum": ["always", "never"]}, "asyncArrow": {"type": "string", "enum": ["always", "never"]}, "constructor": {"type": "string", "enum": ["always", "never"]}, "method": {"type": "string", "enum": ["always", "never"]}, "named": {"type": "string", "enum": ["always", "never"]}}, "additionalProperties": false}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | space-within-parens | Enforces spaces within parentheses or disallow them. | {"definitions": {"options": {"type": "array", "items": {"type": "number", "min": 0}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | switch-default | Require a `default` case in all `switch` statements. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | switch-final-break | Checks whether the final clause of a switch statement ends in `break;`. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["always"]}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | trailing-comma | Requires or disallows trailing commas in array and object literals, destructuring assignments, function typings, named imports and exports and function parameters. | {"definitions": {"options": {"type": "array", "items": {"type": "object", "properties": {"multiline": {"anyOf": [{"type": "string", "enum": ["always", "never"]}, {"type": "object", "properties": {"arrays": {"type": "string", "enum": ["always", "never", "ignore"]}, "exports": {"type": "string", "enum": ["always", "never", "ignore"]}, "functions": {"type": "string", "enum": ["always", "never", "ignore"]}, "imports": {"type": "string", "enum": ["always", "never", "ignore"]}, "objects": {"type": "string", "enum": ["always", "never", "ignore"]}, "typeLiterals": {"type": "string", "enum": ["always", "never", "ignore"]}}, "additionalProperties": false}]}, "singleline": {"anyOf": [{"type": "string", "enum": ["always", "never"]}, {"type": "object", "properties": {"arrays": {"type": "string", "enum": ["always", "never", "ignore"]}, "exports": {"type": "string", "enum": ["always", "never", "ignore"]}, "functions": {"type": "string", "enum": ["always", "never", "ignore"]}, "imports": {"type": "string", "enum": ["always", "never", "ignore"]}, "objects": {"type": "string", "enum": ["always", "never", "ignore"]}, "typeLiterals": {"type": "string", "enum": ["always", "never", "ignore"]}}, "additionalProperties": false}]}, "esSpecCompliant": {"type": "boolean"}}, "additionalProperties": false}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | esSpecCompliant | Option to forbid trailing comma after rest | {"type": "boolean"} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | triple-equals | Requires `===` and `!==` in place of `==` and `!=`. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["allow-null-check", "allow-undefined-check"]}, "minItems": 1, "maxItems": 3, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 3, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | typeof-compare | Makes sure result of `typeof` is compared to correct string values | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | use-isnan | Enforces use of the `isNaN()` function to check for NaN references instead of a comparison to the `NaN` constant. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | variable-name | Checks variable names for various errors. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["check-format", "require-const-for-all-caps", "allow-leading-underscore", "allow-trailing-underscore", "allow-pascal-case", "allow-snake-case", "ban-keywords"]}, "minItems": 1, "maxItems": 7, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 7, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | whitespace | Enforces whitespace style conventions. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["check-branch", "check-decl", "check-operator", "check-module", "check-separator", "check-rest-spread", "check-type", "check-typecast", "check-type-operator", "check-preblock", "check-postbrace"], "minItems": 1, "maxItems": 10, "uniqueItems": true}}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | adjacent-overload-signatures | Enforces function overloads to be consecutive. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | ban-ts-ignore | Bans "// @ts-ignore" comments from being used. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "additionalProperties": false}]} |
tslint.json | array-type | Requires using either 'T[]' or 'Array<T>' for arrays. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["array", "generic", "array-simple"]}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | await-promise | Warns for an awaited value that is not a Promise. | {"definitions": {"options": {"type": "array", "items": {"type": "string"}, "minItems": 1, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | ban-types | Bans specific types from being used. Does not ban the corresponding runtime objects from being used. | {"definitions": {"options": {"type": "array", "items": {"type": "array", "items": {"type": "string"}, "minItems": 1, "maxItems": 2}, "minItems": 1, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | callable-types | An interface or literal type with just a call signature can be written as a function type. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | interface-name | Requires interface names to begin with a capital 'I' | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["always-prefix", "never-prefix"]}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | interface-over-type-literal | Prefer an interface declaration over a type literal (`type T = { ... }`) | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | match-default-export-name | Requires that a default import have the same name as the declaration it imports.
Does nothing for anonymous default exports. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | member-access | Requires explicit visibility declarations for class members. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["no-public", "check-accessor", "check-constructor", "check-parameter-property"]}, "minItems": 1, "maxItems": 4, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 4, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | no-angle-bracket-type-assertion | Requires the use of `as Type` for type assertions instead of `<Type>`. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-any | Disallows usages of `any` as a type declaration. | {"allOf": [{}, {"items": [{"type": "boolean"}, {"type": "object", "properties": {"ignore-rest-args": {"type": "boolean"}}}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-boolean-literal-compare | Warns on comparison to a boolean literal, as in `x === true`. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-empty-interface | Forbids empty interfaces. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-floating-promises | Promises returned by functions must be handled appropriately. | {"definitions": {"options": {"type": "array", "items": {"type": "string"}, "minItems": 1, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | no-inferrable-types | Disallows explicit type declarations for variables or parameters initialized to a number, string, or boolean. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["ignore-params", "ignore-properties"]}, "minItems": 1, "maxItems": 2, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 3, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | no-inferred-empty-object-type | Disallow type inference of {} (empty object type) at function and constructor call sites | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-internal-module | Disallows internal `module` | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-mergeable-namespace | Disallows mergeable namespaces in the same file. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-misused-new | Warns on apparent attempts to define constructors for interfaces or `new` for classes. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-namespace | Disallows use of internal `module`s and `namespace`s. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["allow-declarations"]}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | no-non-null-assertion | Disallows non-null assertions. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-object-literal-type-assertion | Forbids an object literal to appear in a type assertion expression.
Casting to `any` is still allowed. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-parameter-properties | Disallows parameter properties in class constructors. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-redundant-jsdoc | Forbids JSDoc which duplicates TypeScript functionality. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-reference-import | Don't `<reference types="foo" />` if you import `foo` anyway. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-unbound-method | Warns when a method is used as outside of a method call. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["ignore-static"]}, "minItems": 1, "maxItems": 1}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | no-unnecessary-qualifier | Warns when a namespace qualifier (`A.x`) is unnecessary. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-unnecessary-type-assertion | Warns if a type assertion does not change the type of an expression. | {"definitions": {"options": {"type": "array", "items": {"type": "string"}, "minItems": 1, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | no-unsafe-any | Warns when using an expression of type 'any' in a dynamic way.
Uses are only allowed if they would work for `{} | null | undefined`.
Type casts and tests are allowed.
Expressions that work on all values (such as `"" + x`) are allowed. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | no-unused-variable | Disallows unused imports, variables, functions and private class members. Similar to tsc's --noUnusedParameters and --noUnusedLocals options, but does not interrupt code compilation. | {"definitions": {"options": {"type": "array", "items": {"oneOf": [{"type": "string", "enum": ["check-parameters"]}, {"type": "object", "properties": {"ignore-pattern": {"type": "string"}}, "additionalProperties": false}]}, "minItems": 1, "maxItems": 2, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 3, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | no-var-requires | Disallows the use of require statements except in import statements. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | prefer-readonly | Requires that private variables are marked as `readonly` if they're never modified outside of the constructor. | {"definitions": {"options": {"type": "array", "items": {"enum": ["only-inline-lambdas"], "type": "string"}}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 2, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | strict-boolean-expressions | Restricts the types allowed in boolean expressions. By default only booleans are allowed.
The following nodes are checked:
* Arguments to the `!`, `&&`, and `||` operators
* The condition in a conditional expression (`cond ? x : y`)
* Conditions for `if`, `for`, `while`, and `do-while` statements. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["allow-null-union", "allow-undefined-union", "allow-string", "allow-enum", "allow-number", "allow-mix", "allow-boolean-or-undefined", "ignore-rhs"]}, "minItems": 1, "maxItems": 8, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 6, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | strict-type-predicates | Warns for type predicates that are always true or always false.
Works for 'typeof' comparisons to constants (e.g. 'typeof foo === "string"'), and equality comparison to 'null'/'undefined'.
(TypeScript won't let you compare '1 === 2', but it has an exception for '1 === undefined'.)
Does not yet work for 'instanceof'.
Does *not* warn for 'if (x.y)' where 'x.y' is always truthy. For that, see strict-boolean-expressions.
This rule requires `strictNullChecks` to work properly. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | typedef | Requires type definitions to exist. | {"definitions": {"options": {"type": "array", "items": {"type": "string", "enum": ["call-signature", "arrow-call-signature", "parameter", "arrow-parameter", "property-declaration", "variable-declaration", "member-variable-declaration", "object-destructuring", "array-destructuring"]}, "minItems": 1, "maxItems": 9, "uniqueItems": true}}, "allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": {}, "maxItems": 10, "uniqueItems": true, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | typedef-whitespace | Requires or disallows whitespace for type definitions. | {"definitions": {"options": {"type": "array", "items": [{"type": "object", "properties": {"call-signature": {"type": "string", "enum": ["nospace", "onespace", "space"]}, "index-signature": {"type": "string", "enum": ["nospace", "onespace", "space"]}, "parameter": {"type": "string", "enum": ["nospace", "onespace", "space"]}, "property-declaration": {"type": "string", "enum": ["nospace", "onespace", "space"]}, "variable-declaration": {"type": "string", "enum": ["nospace", "onespace", "space"]}}, "additionalProperties": false}, {"type": "object", "properties": {"call-signature": {"type": "string", "enum": ["nospace", "onespace", "space"]}, "index-signature": {"type": "string", "enum": ["nospace", "onespace", "space"]}, "parameter": {"type": "string", "enum": ["nospace", "onespace", "space"]}, "property-declaration": {"type": "string", "enum": ["nospace", "onespace", "space"]}, "variable-declaration": {"type": "string", "enum": ["nospace", "onespace", "space"]}}, "additionalProperties": false}], "minItems": 1, "maxItems": 2}}, "allOf": [{}, {"items": [{"type": "boolean"}, {}, {}], "maxItems": 3, "properties": {"options": {"oneOf": [{}, {}]}, "severity": {}}, "additionalProperties": false}]} |
tslint.json | options | An option value or an array of multiple option values. | {"oneOf": [{}, {}]} |
tslint.json | type-literal-delimiter | Checks that type literal members are separated by semicolons.
Enforces a trailing semicolon for multiline type literals. | {"allOf": [{}, {"items": [{"type": "boolean"}, {"type": "object", "properties": {"singleLine": {"type": "string", "enum": ["always", "never"]}}}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | unified-signatures | Warns for any two overloads that could be unified into one by using a union or an optional/rest parameter. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | use-default-type-parameter | Warns if an explicitly specified type argument is the default for that type parameter. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "properties": {"severity": {}}, "additionalProperties": false}]} |
tslint.json | function-constructor | Prevents using the built-in Function constructor. | {"allOf": [{}, {"items": [{"type": "boolean"}], "additionalItems": false, "additionalProperties": false}]} |
tslint.json | extends | The name of a built-in configuration preset, or a path or array of paths to other configuration files which are extended by this configuration. These values are handled using node module resolution semantics. | {"type": ["string", "array"], "items": {"type": "string"}} |
tslint.json | rulesDirectory | A path to a directory or an array of paths to directories of custom rules. These values are handled using node module resolution semantics, if an `index.js` is placed in your rules directory. | {"type": ["string", "array"], "items": {"type": "string"}} |
tslint.json | rules | A map of rules that will be used to lint TypeScript files. These rules apply to `.ts` and `.tsx` files. | {"allOf": [{}, {}]} |
Subsets and Splits