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Node.jsNode.jsError code

ERR_WEBASSEMBLY_NOT_SUPPORTED

webassembly not supported

What does this code mean?

Code ERR_WEBASSEMBLY_NOT_SUPPORTED · An issue reported by Node.js.

Official explanation · Original text

A feature requiring WebAssembly was used, but WebAssembly is not supported or has been disabled in the current environment (for example, when running with --jitless). TypeScript parsing and WebAssembly module imports, including source phase imports, report this error when WebAssembly is unavailable. Node.js does not provide an alternative implementation for these operations. This error can be caught without terminating the process.

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

Errors | Node.js v26.13.1 Documentation ↗

Creator: Node.js contributors; Joyent, Inc. and other Node contributors
License: MIT License (Node.js documentation)
Checked on: 2026-11-12

Modifications: English prose extracted; whitespace normalized; Korean context and classified official links added. Python code examples not redistributed.

Source details · Original licenses and notices