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Constrain webpack config for olm.wasm (#23633)

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I've been experimenting with loading WebAssembly into EW, for which I need to
use webpack's default wasm loader. Currently we're overriding that for *all*
files called `*.wasm`, which is too broad.

There are currently two `*.wasm` artifacts in EW: `decoderWorker.min.wasm`, and
`olm.wasm`. `decoderWorker` has its own rule, so the `*.wasm` rule is only used
for `olm.wasm`. So, let's tighten up the test for that rule so that it doesn't
catch other innocent `.wasm`s in the cross-fire.
This commit is contained in:
Richard van der Hoff 2022-10-28 10:54:37 +01:00 committed by GitHub
parent 2a46122f28
commit 1b98601870
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1 changed files with 12 additions and 6 deletions
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18
webpack.config.js
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@ -369,9 +369,14 @@ module.exports = (env, argv) => {
],
},
{
test: /\.wasm$/,
// the olm library wants to load its own wasm, rather than have webpack do it.
// We therefore use the `file-loader` to tell webpack to dump the contents to
// a separate file and return the name, and override the default `type` for `.wasm` files
// (which is `webassembly/experimental` under webpack 4) to stop webpack trying to interpret
// the filename as webassembly. (see also https://github.com/webpack/webpack/issues/6725)
test: /olm\.wasm$/,
loader: "file-loader",
type: "javascript/auto", // https://github.com/webpack/webpack/issues/6725
type: "javascript/auto",
options: {
name: '[name].[hash:7].[ext]',
outputPath: '.',
@ -382,7 +387,7 @@ module.exports = (env, argv) => {
// We more or less just want it to be clear it's for opus and not something else.
test: /encoderWorker\.min\.js$/,
loader: "file-loader",
type: "javascript/auto", // https://github.com/webpack/webpack/issues/6725
type: "javascript/auto",
options: {
// We deliberately override the name so it makes sense in debugging
name: 'opus-encoderWorker.min.[hash:7].[ext]',
@ -422,11 +427,11 @@ module.exports = (env, argv) => {
},
},
{
// This is from the same place as the encoderWorker above, but only needed
// for Safari support.
// Same deal as olm.wasm: the decoderWorker wants to load the wasm artifact
// itself.
test: /decoderWorker\.min\.wasm$/,
loader: "file-loader",
type: "javascript/auto", // https://github.com/webpack/webpack/issues/6725
type: "javascript/auto",
options: {
// We deliberately don't change the name because the decoderWorker has this
// hardcoded. This is here to avoid the default wasm rule from adding a hash.
@ -652,6 +657,7 @@ module.exports = (env, argv) => {
// chunks even after the app is redeployed.
filename: "bundles/[hash]/[name].js",
chunkFilename: "bundles/[hash]/[name].js",
webassemblyModuleFilename: "bundles/[hash]/[modulehash].wasm",
},
// configuration for the webpack-dev-server