SystemJS does not support direct integration with the native ES module browser loader because there is no way to share dependencies between the module systems. To support easy loading of TypeScript or ES modules in development SystemJS workflows, see the SystemJS Babel Extension. See the hooks documentation for more information. Since all loader features are hookable, custom extensions can be easily made following the same approach as the bundled extras. json module type loading support in line with the existing modules specifications. Useful for loading common library scripts from CDN like System.import('///lodash'). Global loading support for loading global scripts and detecting the defined global as the default export.The following extras are included in system.js loader by default, and can be added to the s.js loader for a smaller tailored footprint: This is currently a potential new standard feature. ) named bundles which can then be imported as System.import('name') (as well as AMD named define support) Named register supports System.register('name'.AMD loading support (through fine which is created).The following pluggable extras can be dropped in with either the s.js or system.js loader:
If you find you need them it is more advisable to use Node.js native module support where possible instead of the SystemJS Node.js loader. Loading CommonJS modules is not currently supported in this loader and likely won't be. Loading global modules with the included global loading extra.Import Maps (via the applyImportMap api).Loading System modules from disk (via file:// urls) or the network, with included caching that respects the Content-Type header.The system-node.cjs loader is a version of SystemJS build designed to run in Node.js, typically for workflows where System modules need to be executed on the server like SSR. Includes the global loading extra for loading global scripts, useful for loading library dependencies traditionally loaded with script tags.Supports loading Wasm, CSS and JSON module types.Tracing hooks and registry deletion API for reloading workflows.The 4.2KB system.js loader adds the following features in addition to the s.js features above:
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It provides a workflow where code written for production workflows of native ES modules in browsers ( like Rollup code-splitting builds), can be transpiled to the System.register module format to work in older browsers that don't support native modules, running almost-native module speeds while supporting top-level await, dynamic import, circular references and live bindings,, module types, import maps, integrity and Content Security Policy with compatibility in older browsers back to IE11. SystemJS is a hookable, standards-based module loader.
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