Error map

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

Node.js · layer 4, Application & API

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1 · On your device 4 · Application & API 7 · Build & delivery
TS2307 — TS2307: Cannot find module 'x' or its corresponding type declarations. (Node.js)TS2307MODULE_NOT_FOUND — Error: Cannot find module 'x' (MODULE_NOT_FOUND) (Node.js)MODULE_NOT_FOUNDTS2532 / TS18048 — TS18048: 'x' is possibly 'undefined'. (TS2532: Object is possibly 'undefined'.) (Node.js)TS2532 / TS18048TS2339 — TS2339: Property 'x' does not exist on type 'Y'. (Node.js)TS2339TS2345 — TS2345: Argument of type 'string | undefined' is not assignable to parameter of type 'string'. (Node.js)TS2345Vite failed to resolve import — [vite] Internal server error: Failed to resolve import "x" from "src/App.jsx". Does the file exist? (React)Vite failed to reso…TS7016 — 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)TS2304ERR_UNKNOWN_FILE_EXTENSION — TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" (Node.js)ERR_UNKNOWN_FILE_EX…ERESOLVE — npm ERR! code ERESOLVE — unable to resolve dependency tree (npm)ERESOLVEENOENT — Error: ENOENT: no such file or directory (Node.js)ENOENTTypeError: not a function — TypeError: x is not a function (JavaScript)TypeError: not a fu…TypeError — TypeError: Cannot read properties of undefined (reading 'x') (JavaScript)TypeErrorTypeError not iterable — TypeError: x is not iterable (JavaScript)TypeError not itera…TS2322 — TS2322: Type 'X' is not assignable to type 'Y' (TypeScript)TS2322ClassCastException — 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_TYPEUnable to cast object of type — System.InvalidCastException: Unable to cast object of type 'X' to type 'Y' (.NET)Unable to cast obje…Cannot convert value of type — Swift: Cannot convert value of type 'X' to expected argument type 'Y' (iOS)Cannot convert valu…E0308 — Rust: error[E0308]: mismatched types — expected `X`, found `Y` (Rust)E0308TS2564 — TS2564: Property 'x' has no initializer and is not definitely assigned in the constructor (TypeScript)TS2564uncontrolled to controlled — Warning: A component is changing an uncontrolled input to be controlled (React)uncontrolled to con…Adjacent JSX elements — Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...</>? (React)Adjacent JSX elemen…setState during render — Warning: Cannot update a component (`Parent`) while rendering a different component (`Child`) (React)setState during ren…TS7006 — TS7006: Parameter 'x' implicitly has an 'any' type (TypeScript)TS7006ReferenceError — ReferenceError: x is not defined (JavaScript)ReferenceErrorERR_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 importERR_IMPORT_ATTRIBUTE_MISSING — TypeError [ERR_IMPORT_ATTRIBUTE_MISSING]: Module needs an import attribute of "type: json" (Node.js)ERR_IMPORT_ATTRIBUT…

Directly related (8)

MODULE_NOT_FOUNDNode.js

Error: Cannot find module 'x' (MODULE_NOT_FOUND)

Node can’t resolve the module path — the package isn’t installed, or a relative path/extension is wrong.

TS2532 / TS18048Node.js

TS18048: 'x' is possibly 'undefined'. (TS2532: Object is possibly 'undefined'.)

TypeScript requires you to handle the case where a value may be undefined before using it.

TS2339Node.js

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

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

TS2345Node.js

TS2345: Argument of type 'string | undefined' is not assignable to parameter of type 'string'.

A value’s type doesn’t match the function parameter — commonly a possibly-undefined value passed where a definite one is required.

Vite failed to resolve importReact

[vite] Internal server error: Failed to resolve import "x" from "src/App.jsx". Does the file exist?

Vite couldn’t find an imported file or package.

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.

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.

Two steps away (20)

ERESOLVEnpm

npm ERR! code ERESOLVE — unable to resolve dependency tree

npm 7+ found conflicting peer dependency requirements and refuses to install a broken tree.

ENOENTNode.js

Error: ENOENT: no such file or directory

A file or directory the program tried to open doesn’t exist at that path.

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…).

TypeErrorJavaScript

TypeError: Cannot read properties of undefined (reading 'x')

You tried to access a property on a value that is `undefined` (or `null`) — usually data that hasn’t loaded yet or a wrong proper…

TypeError not iterableJavaScript

TypeError: x is not iterable

for…of, spread or destructuring was used on something that isn’t an array/iterable.

TS2322TypeScript

TS2322: Type 'X' is not assignable to type 'Y'

You assigned a value whose type doesn’t match the declared type of the variable, property or return value.

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.

Unable to cast object of type.NET

System.InvalidCastException: Unable to cast object of type 'X' to type 'Y'

An explicit cast failed because the object’s runtime type isn’t the target type.

Cannot convert value of typeiOS

Swift: Cannot convert value of type 'X' to expected argument type 'Y'

The value’s type doesn’t match what the function or property expects.

E0308Rust

Rust: error[E0308]: mismatched types — expected `X`, found `Y`

A value’s type doesn’t match what the context expects — common with &str vs String, Option/Result vs plain values, and integer ty…

TS2564TypeScript

TS2564: Property 'x' has no initializer and is not definitely assigned in the constructor

With strictPropertyInitialization on, a class property declared without ? or a default isn’t set in the constructor.

uncontrolled to controlledReact

Warning: A component is changing an uncontrolled input to be controlled

An input’s `value` started as `undefined` (uncontrolled) and later became a defined value (controlled), or vice versa.

Adjacent JSX elementsReact

Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...</>?

A component returns two sibling JSX elements without a single parent.

setState during renderReact

Warning: Cannot update a component (`Parent`) while rendering a different component (`Child`)

A child component updated a parent’s state during its render instead of in an effect or event handler.

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.

ReferenceErrorJavaScript

ReferenceError: x is not defined

Code refers to a variable or function name that doesn’t exist in the current scope.

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"…

ERR_IMPORT_ATTRIBUTE_MISSINGNode.js

TypeError [ERR_IMPORT_ATTRIBUTE_MISSING]: Module needs an import attribute of "type: json"

An ES module imported a .json file without the required import attribute.

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