v0.12.0

Fixed

• Fixes duplicate module errors by canonicalizing all import specifiers. Import
  specifiers are now canonicalized by version number and default module. This
  applies both to local project files, and throughout the entire external
  dependency tree.

• Import maps now apply to modules in external dependencies, not just to local
  project files.

• The TypeScript compiler can now deal with multiple versions of the same
  dependency. Previously, if the import graph included two versions of the same
  package, only one arbitrary version of the types would be compiled. This
  caused various errors and missing type issues.

Changed

• If the project contains a package.json file, then its
  dependencies
  field will be used to determine the version of dependencies (just like how NPM
  works locally).

• Dependencies are now served from the special
  "<service-worker-scope>/node_modules/..." path, instead of directly from
  https://unpkg.com/...?module URLs. Behind-the-scenes, dependencies are still
  fetched from unpkg, but they are now themselves transformed to ensure correct
  specifier canonicalization.

• BREAKING Due to large changes to the way dependencies are handled, there
  is some risk of breakage due to subtle behavior changes that existing
  configurations may be relying on. Therefore, this release is versioned with a
  major increment.