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Previously, ngcc could only handle UMD modules whose wrapper function was implemented as a `ts.ConditionalExpression` (i.e. using a ternary operator). This is the format emitted by popular bundlers, such as Rollup. However, this failed to account for a different format, using `if/else` statements, such as the one [emitted by Webpack][1]. This commit prepares ngcc for supporting different UMD wrapper function formats by decoupling the operation of parsing the wrapper function body to capture the various factory function calls and that of operating on the factory function calls (for example, to read or update their arguments). In a subsequent commit, this will be used to add support for the Webpack format. [1]: https://webpack.js.org/configuration/output/#type-umd |
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| BUILD.bazel | ||
| index.ts | ||
| main-ngcc.ts | ||
| 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