Generated Mojo Typescript bindings are compiled to plain JavaScript bindings for plain JavaScript clients and to Closure-annotated JavaScript for Closure clients.
These bindings are work in progress and are not ready for general use.
To use the Typescript bindings to generate JS bindings, set use_typescript_sources to true in your mojom target:
mojom("interfaces") {
sources = [
"echo.mojom",
]
use_typescript_sources = true
}
and add enable_typescript_bindings = true to your args.gn.
There are two sets of tests: compilation and runtime.
Compilation tests are done by including the //mojo/public/js/ts/bindings/tests gn target, which triggers the Typescript bindings generation and their compilation. This target is included as part of mojo_unittests.
Runtime tests are done as part of Blink's Web Tests. They are in //third_party/blink/web_tests/mojo/bindings-lite-*.html.