webpack-koa-stats-exposer
v1.0.0
Published
find webpack bundle paths and expose them to your webserver
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webpack stats exposer
expose the right webpack bundle paths to koa.
exports
getBundlePaths({statsFilePath}) => [::string]- finds the paths to javascript files by inspecting a webpack stats file:
buildExposeBundlePathsKoaMiddleware({defaultBundlePaths, ctxPropertyName}) => (ctx, next) => ::Promise- middleware builder that exposes the js paths on
ctx. The script paths are extracted fromctx.state.webpackStatsif it is set, whichis useful for automatically using the script paths in conjunction with webpack-dev-middleware.
usage
build script:
webpack --profile --json > webpack-stats.jsonkoa server definition:
import Koa from 'koa';
import {
getScriptPaths,
buildExposeAssetPathsKoaMiddleware,
} from 'webpack-stats-explorer';
const builtBundlePaths = getScriptPaths({statsFilePath: 'webpack-stats.json'})
const app = new Koa();
if (process.env.NODE_ENV !== 'production') {
app.use(koaWebpack({compiler})) // compiler is an instance of webpack(config)
}
app.use(buildExposeAssetPathsKoaMiddleware({
defaultBundlePaths: builtBundlePaths,
ctxPropertyName: 'jsPaths'
});
app.use(ctx => {
ctx.body = `
<!doctype HTML>
<html>
<head>
<title>hello world</title>
</head>
<body>
${ctx.bundlePaths
.map(bundlePath => `<script type='application/json' src='${bundlePath}' ></script>`)
.join('\n')
}
</body>
</html>
`;
})In the example app above, ctx.bundlePaths will be set to the paths in the stats object at ctx.state.webpackStats when present (i.e. when NODE_ENV !== production and koaWebpack is used), otherwise the bundle paths will be found in webpack-stats.json`.
So, when koa-webpack is used, the bundles that it produces will be exposed on the page, otherwise, the bundles built by the build script will be used.