SystemJS 0.18.0

This is a minor but breaking correction to the 0.17 release. For upgrading from SystemJS 0.16.0, the 0.17 release notes provide the breaking changes upgrade guide.

Minor Breaking Changes

• Paths now apply before defaultJSExtensions instead of after.
• defaultExtension in packages (https://github.com/systemjs/systemjs/blob/0.18.0/docs/config-api.md#packages) now takes preference to defaultJSExtensions (https://github.com/systemjs/systemjs/blob/0.18.0/docs/config-api.md#defaultjsextensions) allowing packages to selectively upgrade to the new conventions.

Features

• require.toUrl AMD support (#504)
• load.metadata.sourceMap support for plugin source map builds (#497)
• Configuration order no longer matters, and baseURL can only be set before other config (#514, 39ff8d0)
• Plugin modules and arguments run through full normalization pipeline (#483)

Bug Fixes

• __useDefault is no longer exported via export * (#487)
• Backwards compatibility fix for global deps meta syntax (#494)
• Fixes system-polyfills.js detection of URL in IE & IE Edge (#495, ModuleLoader/es-module-loader#398)
• Boolean conditional module name fix (#503)