JSON modules allow statically importing JSON instead of consuming JSON dynamically through fetch(). JSON modules, like JavaSCript modules, are fetched using “cors” mode and strict MIME type checking. They also share the same module import syntax, for example: import data from "./resource.json”.

Motivation

There is not currently a way for developers to statically import JSON content as part of module graph instantiation. Currently developers are forced to consume JSON content dynamically through e.g. fetch(). See GitHub thread here for extensive discussion and many comments indicating support: https://github.com/whatwg/html/issues/4315. The StackOverflow thread here also contains comments highlighting the lack of this feature in ES6: https://stackoverflow.com/questions/34944099/how-to-import-a-json-file-in-ecmascript-6

Documentation

• https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/master/SyntheticModules/designDoc.md
• https://groups.google.com/a/chromium.org/d/topic/blink-dev/ojwkySW-bpQ/discussion

Specification

Established standard

Status in Chromium

Blink components: Blink>DOM

In development (tracking bug)

Consensus & Standardization

• Firefox: Worth prototyping
• Edge: In development
• Safari: No signal
• Web Developers: Strongly positive

Owners

• daniec@microsoft.com
• sasebree@microsoft.com
• travil@microsoft.com
• pcupp@microsoft.com
• gwhit@microsoft.com
• littledan@igalia.com
• ms2ger@igalia.com

Intent to Prototype url

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Last updated on 2021-04-12