Error map

TS7053: Element implicitly has an 'any' type because expression of type 'string' can't be used to index TypeScript: error TS7053: Element implicitly has an 'any' type because expression of type 'string' can't be used to index type '{ a: number; }'

TypeScript · layer 1, On your device

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1 · On your device 4 · Application & API
TS7053: Element implicitly has an 'any' type because expression of type 'string' can't be used to index — TypeScript: error TS7053: Element implicitly has an 'any' type because expression of type 'string' can't be used to index type '{ a: number; }' (TypeScript)TS7053: Ele…TS2339 — TS2339: Property 'x' does not exist on type 'Y'. (Node.js)TS2339TS2551: Property does not exist. Did you mean — TypeScript: error TS2551: Property 'lenght' does not exist on type 'string'. Did you mean 'length'? (TypeScript)TS2551: Property do…TS7031: Binding element implicitly has an 'any' type — TypeScript: error TS7031: Binding element 'name' implicitly has an 'any' type. (TypeScript)TS7031: Binding ele…TS1192: Module has no default export — TypeScript: error TS1192: Module '"./utils"' has no default export. (TypeScript)TS1192: Module has …TS1005: ';' expected / ',' expected (syntax error) — TypeScript: error TS1005: ';' expected. (TypeScript)TS1005: ';' expecte…TS1128: Declaration or statement expected — TypeScript: error TS1128: Declaration or statement expected. (TypeScript)TS1128: Declaration…Cannot find module './App.vue' or its corresponding type declarations — TypeScript: error TS2307: Cannot find module './App.vue' or its corresponding type declarations. (Vue)Cannot find module …TS7005: Variable implicitly has an 'any' type — TypeScript: error TS7005: Variable 'x' implicitly has an 'any[]' type. / TS7034: Variable implicitly has type 'any' in some locations (TypeScript)TS7005: Variable im…ClassCastException — java.lang.ClassCastException: class A cannot be cast to class B (Java)ClassCastExceptionERR_INVALID_ARG_TYPE — TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined (Node.js)ERR_INVALID_ARG_TYPEERR_UNKNOWN_FILE_EXTENSION — TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" (Node.js)ERR_UNKNOWN_FILE_EX…TS2353: Object literal may only specify known properties — TypeScript: error TS2353: Object literal may only specify known properties, and 'nmae' does not exist in type 'User' (TypeScript)TS2353: Object lite…TS2741: Property is missing in type but required in type — TypeScript: error TS2741: Property 'email' is missing in type '{ name: string; }' but required in type 'User'. (TypeScript)TS2741: Property is…TS1259: Module can only be default-imported using the 'esModuleInterop' flag — TypeScript: error TS1259: Module '"express"' can only be default-imported using the 'esModuleInterop' flag (TypeScript)TS1259: Module can …key is not a prop — Warning: `key` is not a prop. Trying to access it will result in `undefined` being returned. (React)key is not a propTS7006 — TS7006: Parameter 'x' implicitly has an 'any' type (TypeScript)TS7006Avoid mutating a prop directly — Vue: [Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders (Vue)Avoid mutating a pr…TypeError: not a function — TypeError: x is not a function (JavaScript)TypeError: not a fu…ERR_REQUIRE_ESM — Error [ERR_REQUIRE_ESM]: require() of ES Module not supported (Node.js)ERR_REQUIRE_ESMSyntaxError import — SyntaxError: Cannot use import statement outside a module (Node.js)SyntaxError importUnexpected token < — SyntaxError: Unexpected token '<' (HTML served instead of JavaScript) (JavaScript)Unexpected token <unexpected end of input — SyntaxError: Unexpected end of input (JavaScript)unexpected end of i…missing ) — SyntaxError: missing ) after argument list (JavaScript)missing )already declared — SyntaxError: Identifier 'x' has already been declared (JavaScript)already declaredawait outside async — SyntaxError: await is only valid in async functions and the top level bodies of modules (JavaScript)await outside asyncunexpected identifier — SyntaxError: Unexpected identifier (JavaScript)unexpected identifi…TS2307 — TS2307: Cannot find module 'x' or its corresponding type declarations. (Node.js)TS2307TS7016 — TS7016: Could not find a declaration file for module 'x'. 'x.js' implicitly has an 'any' type. (Node.js)TS7016TS2304 — TS2304: Cannot find name 'x'. (Node.js)TS2304TS2366: Function lacks ending return statement — TypeScript: error TS2366: Function lacks ending return statement and return type does not include 'undefined'. (TypeScript)TS2366: Function la…TS2502/TS7022: referenced directly or indirectly in its own initializer — TypeScript: error TS7022: 'x' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer (TypeScript)TS2502/TS7022: refe…TS1208: File cannot be compiled under '--isolatedModules' because it is considered a global script file — TypeScript: error TS1208: 'index.ts' cannot be compiled under '--isolatedModules' because it is considered a global script file. Add an import, export, or an empty 'export {}' statement (TypeScript)TS1208: File cannot…

Directly related (8)

TS2339Node.js

TS2339: Property 'x' does not exist on type 'Y'.

TypeScript’s type for the object doesn’t include that property.

TS2551: Property does not exist. Did you meanTypeScript

TypeScript: error TS2551: Property 'lenght' does not exist on type 'string'. Did you mean 'length'?

A property name is misspelled (TypeScript suggests the closest valid one).

TS7031: Binding element implicitly has an 'any' typeTypeScript

TypeScript: error TS7031: Binding element 'name' implicitly has an 'any' type.

A destructured parameter has no type, so its elements default to `any`.

TS1192: Module has no default exportTypeScript

TypeScript: error TS1192: Module '"./utils"' has no default export.

You used `import x from "./mod"` but the module only has named exports.

TS1005: ';' expected / ',' expected (syntax error)TypeScript

TypeScript: error TS1005: ';' expected.

The parser hit a syntax error — missing punctuation, mismatched brackets, or an unsupported syntax for your TypeScript version.

TS1128: Declaration or statement expectedTypeScript

TypeScript: error TS1128: Declaration or statement expected.

The parser found a token where a declaration or statement should start — usually stray braces/parentheses or code outside a funct…

Cannot find module './App.vue' or its corresponding type declarationsVue

TypeScript: error TS2307: Cannot find module './App.vue' or its corresponding type declarations.

TypeScript doesn't know what a `.vue` import is without a shim or Volar/`vue-tsc`.

TS7005: Variable implicitly has an 'any' typeTypeScript

TypeScript: error TS7005: Variable 'x' implicitly has an 'any[]' type. / TS7034: Variable implicitly has type 'any' in some locations

With `noImplicitAny`, a variable's type can't be inferred and defaults to `any`.

Two steps away (24)

ClassCastExceptionJava

java.lang.ClassCastException: class A cannot be cast to class B

An object was cast to a type it isn’t.

ERR_INVALID_ARG_TYPENode.js

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined

A Node API got an argument of the wrong type — usually undefined because an env var or config value is missing.

ERR_UNKNOWN_FILE_EXTENSIONNode.js

TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts"

Node tried to run a TypeScript file as ESM without a TypeScript loader.

TS2353: Object literal may only specify known propertiesTypeScript

TypeScript: error TS2353: Object literal may only specify known properties, and 'nmae' does not exist in type 'User'

An object literal has an extra (or misspelled) property not in the target type (excess property check).

TS2741: Property is missing in type but required in typeTypeScript

TypeScript: error TS2741: Property 'email' is missing in type '{ name: string; }' but required in type 'User'.

An object lacks one required property of the target type.

TS1259: Module can only be default-imported using the 'esModuleInterop' flagTypeScript

TypeScript: error TS1259: Module '"express"' can only be default-imported using the 'esModuleInterop' flag

You default-import a CommonJS module that uses `export =`, but `esModuleInterop` isn't enabled.

key is not a propReact

Warning: `key` is not a prop. Trying to access it will result in `undefined` being returned.

A component tried to read props.key, which React reserves and never passes down.

TS7006TypeScript

TS7006: Parameter 'x' implicitly has an 'any' type

A function parameter has no type annotation and TypeScript can’t infer one, which noImplicitAny (part of strict) forbids.

Avoid mutating a prop directlyVue

Vue: [Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders

A child component assigned to a prop. Props flow one way — the parent owns the value.

TypeError: not a functionJavaScript

TypeError: x is not a function

You called something as a function, but its value is not a function (it’s undefined, a string, an object…).

ERR_REQUIRE_ESMNode.js

Error [ERR_REQUIRE_ESM]: require() of ES Module not supported

CommonJS code used `require()` on a package that is ES-module-only (node-fetch 3, chalk 5, nanoid 4, got 12…).

SyntaxError importNode.js

SyntaxError: Cannot use import statement outside a module

An `import` statement ran in a context treated as CommonJS (Node without "type": "module", a browser script without type="module"…

Unexpected token <JavaScript

SyntaxError: Unexpected token '<' (HTML served instead of JavaScript)

The browser loaded a .js file but received HTML (an error page or the SPA index.html).

unexpected end of inputJavaScript

SyntaxError: Unexpected end of input

The parser reached the end of the code (or JSON) while still expecting more — a missing } ) ] or empty JSON.

missing )JavaScript

SyntaxError: missing ) after argument list

A function call’s parentheses are unbalanced — often an unescaped quote or a missing comma/plus.

already declaredJavaScript

SyntaxError: Identifier 'x' has already been declared

The same let/const/class name was declared twice in the same scope.

await outside asyncJavaScript

SyntaxError: await is only valid in async functions and the top level bodies of modules

await was used inside a function that isn’t async (or in a classic, non-module script).

unexpected identifierJavaScript

SyntaxError: Unexpected identifier

The parser found a name where it expected punctuation — usually a missing comma, operator or quote.

TS2307Node.js

TS2307: Cannot find module 'x' or its corresponding type declarations.

TypeScript can’t resolve the import — the package isn’t installed, the path alias isn’t configured, or there are no types.

TS7016Node.js

TS7016: Could not find a declaration file for module 'x'. 'x.js' implicitly has an 'any' type.

The JavaScript package has no TypeScript types bundled and no @types package installed.

TS2304Node.js

TS2304: Cannot find name 'x'.

TypeScript doesn’t know an identifier — a missing import, missing type definitions (e.g. for Node or Jest globals), or a typo.

TS2366: Function lacks ending return statementTypeScript

TypeScript: error TS2366: Function lacks ending return statement and return type does not include 'undefined'.

A function with a declared return type can reach its end without returning on some path.

TS2502/TS7022: referenced directly or indirectly in its own initializerTypeScript

TypeScript: error TS7022: 'x' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer

A variable's inferred type depends on itself (circular inference).

TS1208: File cannot be compiled under '--isolatedModules' because it is considered a global script fileTypeScript

TypeScript: error TS1208: 'index.ts' cannot be compiled under '--isolatedModules' because it is considered a global script file. Add an import, export, or an empty 'export {}' statement

With `isolatedModules`, every file must be a module (have an import or export).

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