3792d72462
Summary: Pull Request resolved: https://github.com/facebook/yoga/pull/1305 Made a quick script to set versions in manifests that currently exist. This should probably be stamped in more places, like the binary as well, but we don't do that right now. This does not update lockfiles for CocoaPods or JS, so those will need to be updated via an install after running this script. A note on language: This repo already has too many toolchains, but I chose Python for this since it corresponds with the enum script, and we can run it with no dependencies on macOS/Linux distros. Reviewed By: cortinico Differential Revision: D46662378 fbshipit-source-id: 74ab99eef137511f8ed2fd7d81335a0fa633caf5
yoga-layout
This package provides prebuilt JavaScript bindings for the Yoga layout engine. Both WebAssembly and asm.js variants are packaged, with the optimal loaded based on platform.
Usage
The default entrypoint provides an asynchronous loader function to return a Yoga instance.
import {loadYoga, Align} from 'yoga-layout';
const Yoga = await loadYoga();
const node = Yoga.Node.create();
node.setAlignContent(Align.Center);
An alternative synchronous API is provided for compatibility, but requires using asm.js in browsers instead of WebAssembly, leading to worse performance and larger assets.
import Yoga, {Align} from 'yoga-layout/sync';
const node = Yoga.Node.create();
node.setAlignContent(Align.Center);
Objects created by Yoga.<>.create() are not automatically garbage collected and should be freed once they are no longer in use.
// Free a config
config.free();
// Free a tree of Nodes
node.freeRecursive();
// Free a single Node
node.free();
Selecting WebAssembly or asm.js
For better performance and smaller packages, WebAssembly is preferred to asm.js where available. yoga-layout tries to provide the right default using export maps so that platforms which can take advantage of WebAssembly use it by default.
A specific entrypoint may be specified on platforms which do not understand export conditions.
import {loadYoga} from 'yoga-layout/wasm-async';
Contributing
Requirements
- Emscripten SDK
- CMake >= 3.13
- (Optional) ninja, for faster builds
Building
git clone https://github.com/facebook/yoga.git
cd yoga/javascript
yarn install
yarn build
Testing
# Build and test all entrypoints
yarn test
# Build and test a specific entrypoint
yarn test:asmjs-sync