Bug Fixes

• Fix IE11 support (#2247)

Patches

• Fix depcache hook (#2242)

Features

• import.meta.resolve implementation (#2230)
• Import maps integrity feature (#2229)

Features

• Define an "s.js" entry in "exports" (#2226)

Patches

• Fixup use of const for older browsers (#2227)

Patches

• Fix auto import handling of dynamic import races during loading phase (#2223)
• Fix crossOrigin script attribute loading in Safari (#2222)

Features

• Dynamic import map extra support (#2217 @stevenvachon)
• Depcache support in import maps for automated preloading (#2134)
• Auto Import feature for <script src="system-register-module.js"> loading for better load performance (#2216, #2210 @tmsns)

Patches

• Fix onload behaviour with flag for error source (#2204 @smartrejames)
• Fix Object.prototype mutation (#2206 @stevenvachon)

Patches

• Better error message when content-type header is missing (#2197 via @brandones)
• Make setters optional (#2193 via @guybedford)

Patches

• Named export extra now works with non-objects (#2186 via @Sauloxd)
• Use correct error number for error 8 (#2182 via @guybedford)

Patches

• Fix error code mixup (#2169)
• Fix bug in system-node.cjs where prepareImport overwrote import map (#2170)
• Adding full dist directory to package.json exports (#2173)
• Increasing timeout for test:node script (#2174)
• Switching to node-fetch to avoid caching bugs in make-fetch-happen (#2171)

Features

• s.js now has full import map support (#2150)
• New system-node.cjs loader designed to run in NodeJS. (#2150, #2158)
• SystemJS now has error codes, along with documentation for each error code (#2151)

Patches

• Fix bug in Chrome 45 where const/let disallowed unless in strict mode (#2162)
• Add warning for calling System.set with non-URL id (#2161)

Maintenance

• Upgrading dependencies and switching building of extras to rollup (#2149)
• Add issue templates (#2157)
• Add bot for bundle size changes to pull requests (#2156, #2166)
• Running tests in Travis CI, including browser tests (#2160)
• Documentation for system-node.cjs (#2164, #2168)
• Fixing tests in IE11 (#2167)

Patches

• Fix for named register race conditions with firstNamedDefine (#2144, resolves #2139 and #2138)

Patches

• Fix problem where a falsy exported value from AMD modules didn't work (#2130 via @lpomerleau)

Patches

• Fix problem where System.delete did not remove named register modules. Now named register modules are automatically removed from registerRegistry as soon as they are used once. (#2125 @k-j-kim)

Patches

• Fix another race condition with named registers (#2121)

Patches

• Supporting multiple define variations for named modules. Resolves #2118. (#2119)

Features

• Adding new createScript / fetch / shouldFetch hooks (#2058) docs

Patches

• Fixing race conditions with named register modules (#2114)

Patches

• Fixing bug where named AMD modules were instantiated twice (#2104)
• Save bytes with setTimeout (#2105)
• Prefer import map resolution over registryRegistry resolution (#2108)

Patches

• Fix bug where url query params and hash broke module type file extension check (#2096 @LarsDenBakker)

Patches

• Fix problem where banner comment in output files had wrong version number (042fa6c)

Patches

• Support registry delete returning update function (#2020)
• Fixing bug where named-exports didn't work on named registers. (#2073 #2074)

Patches

• Fix IE global detection to ignore IFrames (#2035, @kduret)
• Remove stray console.log (#2046, @joeldenning)

• Fix relative resolution of LHS URLs in import maps (#2039)
• Fix named register extra to extend rather than reinstantiate the SystemJS instance (#2042)
• Update extras to extend the global System instance explicitly (#2043)

Patches

• Bug fix for named AMD modules (#2029)
• Bug fix for IE11 regression (#2033)

Patches

• Fixes a bug where imports before the import map load might not apply the import map (#2024, @joeldenning)
• Fixes the module-types extra output which was incorrectly referencing an import (#2027, @joeldenning)

Breaking Changes

• Import map scopes now require a trailing / (#2009)
• JSON and Wasm modules are no longer supported by default in s.js and system.js. Instead, use the new module-types extra
• Deps argument added to onload hook (#1998)
• System.resolve is now synchronous by default in both s.js and system.js (#1996 and #1939, @joeldenning)

Features

• CSS modules can now be loaded by s.js and system.js. Docs (#1997)
• Cascading/Composing import maps are now supported. Docs (#2009)
• New module types extra for CSS, JSON and Wasm (#2006)
• The first named System.regiser in a bundle will now define the bundle module itself. This avoids need for double System.import() (#1984, @joeldenning)

Patches

• Named exports extra fix to not alter the default export (#1983, @joeldenning)

Major Changes

• Import map scopes now resolve relative to the base, not the scope (#1975)

Features

• Added a new "Use Default" extra. (#1969)

Maintenance

• Fix typo in comment. (#1970 @kouts)

Upgrades to ES Module Loader 2.3.0:

• Support for top-level await variant B through a promise return from System.register execute
• Support for real ES module returns in instantiate through Symbol.toStringTag detection (allowing bridging between native loader)

Fixes a Rollup build bug resulting in rewriting of indirect eval.

Production Loader

• Fixes global detection when loading in parallel (#1810)

Dev Loader

• Fixes indirect eval build bug (#1809)
• Disables invalid depCache preloading when running in Node (#1806)

Updates SystemJS production loader to support System.config({ wasm: true }) with WebAssembly.compileStreaming.

Updates SystemJS production loader to support System.config({ wasm: true }) with WebAssembly.compileStreaming.

This release represents a new build of the 6KB SystemJS production loader with the following changes:

• Support for loading modules as AMD falling back to global detection (#1778)
• AMD modules are treated as having the shape { default: module } through System.import instead of returning the default directly (this will ensure dynamic import workflows work out correctly) (#1786)

Now that Rollup supports the system module format and code splitting, this will allow easy production workflows against chunking and CDN externals.