History

JoostK 9cec94a008 perf(compiler-cli): use bound symbol in import graph in favor of module resolution (#40948 ) The import graph scans source files for its import and export statements to extract the source files that it imports/exports. Such statements contain a module specifier string and this module specifier used to be resolved to the actual source file using an explicit module resolution step. This is especially expensive in incremental rebuilds, as the module resolution cache has not been primed during program creation (assuming that the incremental program was able to reuse the module resolution results from a prior compilation). This meant that all module resolution requests would have to hit the filesystem, which is relatively slow. This commit is able to replace the module resolution with TypeScript's bound symbol of the module specifier. This symbol corresponds with the `ts.SourceFile` that is being imported/exported, which is exactly what the import graph was interested in. As a result, no filesystem accesses are done anymore. PR Close #40948		2021-03-08 12:05:48 -08:00
..
src	perf(compiler-cli): use bound symbol in import graph in favor of module resolution (#40948 )	2021-03-08 12:05:48 -08:00
test	feat(compiler): emit @__PURE__ or @pureOrBreakMyCode annotations in the generated code (#41096 )	2021-03-08 10:30:08 -08:00
BUILD.bazel	perf(compiler-cli): detect semantic changes and their effect on an incremental rebuild (#40947 )	2021-03-08 08:41:19 -08:00
README.md	refactor(ivy): move ngcc into a higher level folder (#29092 )	2019-03-20 14:45:54 -04:00
index.ts	refactor(ngcc): move `logging` code into `ngtsc` (#37114 )	2020-06-22 13:38:47 -07:00
main-ivy-ngcc.ts	build: update license headers to reference Google LLC (#37205 )	2020-05-26 14:26:58 -04:00
main-ngcc.ts	build: update license headers to reference Google LLC (#37205 )	2020-05-26 14:26:58 -04:00

README.md

Angular Compatibility Compiler (ngcc)

This compiler will convert node_modules compiled with ngc, into node_modules which appear to have been compiled with ngtsc.

This conversion will allow such "legacy" packages to be used by the Ivy rendering engine.

Building

The project is built using Bazel:

yarn bazel build //packages/compiler-cli/ngcc

Unit Testing

The unit tests are built and run using Bazel:

yarn bazel test //packages/compiler-cli/ngcc/test

Integration Testing

There are tests that check the behavior of the overall executable:

yarn bazel test //packages/compiler-cli/ngcc/test:integration