JavaScript ErrorsError

TypeError: Cannot add property, object is not extensible

errorCodes.js-typeerror-not-extensible.name

errorCodes.js-typeerror-not-extensible.description

browsernode

type-system runtime

What causes this error

errorCodes.js-typeerror-not-extensible.cause

How to fix it

errorCodes.js-typeerror-not-extensible.fix

Example

'use strict'; const o = Object.preventExtensions({}); o.x = 1;

Official Documentation

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errorCodes.js-typeerror-not-a-function.name

errorCodes.js-typeerror-not-a-function.description

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ERR_OSSL_EVP_UNSUPPORTED

errorCodes.js-err-ossl-evp-unsupported.name

errorCodes.js-err-ossl-evp-unsupported.description

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errorCodes.js-rangeerror-invalid-date.name

errorCodes.js-rangeerror-invalid-date.description

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errorCodes.js-typeerror-assignment-to-constant.name

errorCodes.js-typeerror-assignment-to-constant.description

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UnhandledPromiseRejection

errorCodes.js-unhandled-promise-rejection.name

errorCodes.js-unhandled-promise-rejection.description

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CORS Error: No Access-Control-Allow-Origin

errorCodes.js-cors-error.name

errorCodes.js-cors-error.description