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[canvaskit] Add documentation about node/npm

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Change-Id: I3818a37bdd3b4fb512559b2c61f5150942450cf4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/418956
Reviewed-by: Tyler Denniston <tdenniston@google.com>
This commit is contained in:
Kevin Lubick 2021-06-16 08:26:49 -04:00
parent e5d23f0b1f
commit c4de8e4aad
1 changed files with 10 additions and 1 deletions
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11
modules/canvaskit/README.md
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@ -1,9 +1,14 @@
# Prerequisites
Node v14 or later is required to run tests. We use npm (the Node Package Manager) to install
test dependencies. Recent installations of Node have npm as well.
CanvasKit has no other external source dependencies.
To compile CanvasKit, you will first need to [install `emscripten`][1]. This
will set the environment `EMSDK` (among others) which is required for
compilation. Which version should you use? [`/infra/wasm-common/docker/emsdk-base/Dockerfile`][2]
shows the version we build and test with. We try to keep this up-to-date.
shows the version we build and test with. We try to use as recent a version of emscripten as
is reasonable.
[1]: https://emscripten.org/docs/getting_started/downloads.html
[2]: https://github.com/google/skia/blob/master/infra/wasm-common/docker/emsdk-base/Dockerfile
@ -27,6 +32,10 @@ for a solution to Python3 using the wrong certificates.
# Compile and Run Local Example
```
# The following installs all npm dependencies and only needs to be when setting up
# or if our npm dependencies have changed (rarely).
npm ci
make release # make debug is much faster and has better error messages
make local-example
```