ESM works in modern browsers and server runtimes, including Node.js, Deno, and Bun. It's tempting to export a single default object literal with more than one property-addressed function rather than use individual exportdeclarations. Browsers without ESM support will not load scripts with a nomodule attribute. The CORS header must be set when a module can be imported from another domain. A CommonJS module makes a function or value.
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Using ES2015 Modules (ESM)Loading ES Modules in BrowsersOpen Source Session ReplayUsing CommonJS Modules in Node.jsDifferences Between ES Modules and CommonJSConclusion1 Comment
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