Error map

Jest ESM Jest: SyntaxError: Cannot use import statement outside a module (Jest encountered an unexpected token)

React · layer 1, On your device

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1 · On your device 4 · Application & API
Jest ESM — Jest: SyntaxError: Cannot use import statement outside a module (Jest encountered an unexpected token) (React)Jest ESMnot wrapped in act — Warning: An update to Component inside a test was not wrapped in act(...) (React)not wrapped in actSyntaxError import — SyntaxError: Cannot use import statement outside a module (Node.js)SyntaxError importERR_REQUIRE_ESM — Error [ERR_REQUIRE_ESM]: require() of ES Module not supported (Node.js)ERR_REQUIRE_ESMUnable to find an element — TestingLibraryElementError: Unable to find an element with the text: x (React)Unable to find an e…ERR_IMPORT_ATTRIBUTE_MISSING — TypeError [ERR_IMPORT_ATTRIBUTE_MISSING]: Module needs an import attribute of "type: json" (Node.js)ERR_IMPORT_ATTRIBUT…ERR_UNKNOWN_FILE_EXTENSION — TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" (Node.js)ERR_UNKNOWN_FILE_EX…Expected to be running in 'ProxyZone' — Angular tests: Error: Expected to be running in 'ProxyZone', but it was not found. (Angular)Expected to be runn…UnhandledPromiseRejection — Node.js: [UnhandledPromiseRejection] — This error originated either by throwing inside of an async function without a catch block (Node.js)UnhandledPromiseRej…await outside async — SyntaxError: await is only valid in async functions and the top level bodies of modules (JavaScript)await outside asyncAbortError — AbortError: The user aborted a request. / signal is aborted without reason (JavaScript)AbortErrorMODULE_NOT_FOUND — Error: Cannot find module 'x' (MODULE_NOT_FOUND) (Node.js)MODULE_NOT_FOUNDReferenceError — ReferenceError: x is not defined (JavaScript)ReferenceErrorERR_HTTP_HEADERS_SENT — Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client (Node.js)ERR_HTTP_HEADERS_SE…ERR_PACKAGE_PATH_NOT_EXPORTED — Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './x' is not defined by "exports" (Node.js)ERR_PACKAGE_PATH_NO…uncontrolled 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…DEP0005 — DeprecationWarning: Buffer() is deprecated due to security and usability issues (DEP0005) (Node.js)DEP0005TS2307 — 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)TS2304Cannot find control with name — Angular: Error: Cannot find control with name: 'email' (reactive forms) (Angular)Cannot find control…exceeded maximum budget — Angular build: Error: bundle initial exceeded maximum budget. Budget 1.00 MB was not met by 120.00 kB with a total of 1.12 MB (Angular)exceeded maximum bu…Schema validation failed with the following errors — Angular CLI: Schema validation failed with the following errors: Data path "" must NOT have additional properties(xyz) (Angular)Schema validation f…

Directly related (7)

not wrapped in actReact

Warning: An update to Component inside a test was not wrapped in act(...)

A component updated state after the test’s synchronous assertions — async work wasn’t awaited.

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_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…).

Unable to find an elementReact

TestingLibraryElementError: Unable to find an element with the text: x

getBy* found no matching element in the rendered output.

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.

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.

Expected to be running in 'ProxyZone'Angular

Angular tests: Error: Expected to be running in 'ProxyZone', but it was not found.

`fakeAsync` / `waitForAsync` was used, but the test environment's zone testing setup is missing.

Two steps away (17)

UnhandledPromiseRejectionNode.js

Node.js: [UnhandledPromiseRejection] — This error originated either by throwing inside of an async function without a catch block

A promise rejected and nothing handled it; since Node 15 this crashes the process.

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).

AbortErrorJavaScript

AbortError: The user aborted a request. / signal is aborted without reason

A fetch was cancelled through an AbortController (or the browser cancelled it).

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.

ReferenceErrorJavaScript

ReferenceError: x is not defined

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

ERR_HTTP_HEADERS_SENTNode.js

Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client

An Express/Node handler tried to send a second response (or set headers) after one was already sent.

ERR_PACKAGE_PATH_NOT_EXPORTEDNode.js

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './x' is not defined by "exports"

You imported a deep path inside a package that its package.json "exports" field doesn’t expose.

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.

DEP0005Node.js

DeprecationWarning: Buffer() is deprecated due to security and usability issues (DEP0005)

Code (yours or a dependency) uses the deprecated new Buffer() constructor.

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.

Cannot find control with nameAngular

Angular: Error: Cannot find control with name: 'email' (reactive forms)

A `formControlName` points at a control that does not exist in the bound `FormGroup`.

exceeded maximum budgetAngular

Angular build: Error: bundle initial exceeded maximum budget. Budget 1.00 MB was not met by 120.00 kB with a total of 1.12 MB

The production build is larger than the size limits (budgets) in angular.json, and the build is configured to fail.

Schema validation failed with the following errorsAngular

Angular CLI: Schema validation failed with the following errors: Data path "" must NOT have additional properties(xyz)

`angular.json` (or an option you passed to a builder) contains a property the schema does not allow — a typo, an option removed i…

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