Unpkg CDN Issue: JSON Imports via ES Module Syntax Fail with 403 Error

[lsongdev]

When I use the esptool-js library is imported as a module using unpkg with the ES module query parameter (https://unpkg.com/esptool-js/lib/index.js?module), the service appends ?module to the import statement, including for JSON files.

For instance, these URLs are affected:

• JavaScript module: https://unpkg.com/[email protected]/lib/targets/esp8266.js?module
• JSON file: https://unpkg.com/[email protected]/lib/targets/stub_flasher/stub_flasher_8266.json?module

However, the service returns an error stating, module mode is available only for JavaScript and HTML files. This issue occurs when the ESPLoader library attempts to import a JSON file as part of its module graph.

Unpkg should either serve JSON files without appending the ?module query parameter or properly handle JSON imports when in ES module mode.

[justinfagnani]

Importing JSON only works with the {type: 'json'} import assertion, so that module is invalid.

Regardless, unpkg seems to be completely unmaintained now, so I doubt it would support import assertions and JSON modules anyway.