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const childProcess = require('child_process');
const ip = require('ip');
const path = require('path');
const webpack = require('webpack');
// The common js bundle (not this one) is built using tsc.
// The umd bundle (this one) has a different entrypoint.
const DISCHARGE_TARGETS_THAT_REQUIRED_HEAP = ['production', 'staging', 'dogfood'];
const getConfigForDischargeTarget = dischargeTarget => {
return {
heapAnalyticsIdEnvName:
dischargeTarget === 'production'
? 'INSTANT_HEAP_ANALYTICS_ID_PRODUCTION'
: 'INSTANT_HEAP_ANALYTICS_ID_DEVELOPMENT',
heapAnalyticsIdRequired: DISCHARGE_TARGETS_THAT_REQUIRED_HEAP.includes(dischargeTarget),
};
};
const GIT_SHA = childProcess
.execSync('git rev-parse HEAD')
.toString()
.trim();
const generateConfig = (dischargeTarget, configOptions) => {
const outputPath = process.env.WEBPACK_OUTPUT_PATH || 'umd';
const { heapAnalyticsIdEnvName, heapAnalyticsIdRequired } = configOptions;
const heapAnalyticsId = process.env[heapAnalyticsIdEnvName];
if (heapAnalyticsIdRequired && !heapAnalyticsId) {
throw new Error(
`Must define heap analytics id in ENV var ${heapAnalyticsIdEnvName} when building for ${dischargeTarget}`,
);
}
const envVars = {
GIT_SHA: JSON.stringify(GIT_SHA),
NPM_PACKAGE_VERSION: JSON.stringify(process.env.npm_package_version),
};
if (dischargeTarget) {
envVars.INSTANT_DISCHARGE_TARGET = JSON.stringify(dischargeTarget);
}
if (heapAnalyticsId) {
envVars.HEAP_ANALYTICS_ID = JSON.stringify(heapAnalyticsId);
}
console.log(envVars);
const config = {
entry: {
instant: './src/index.umd.ts',
},
output: {
filename: '[name].js',
path: path.resolve(__dirname, outputPath),
library: 'zeroExInstant',
libraryTarget: 'umd',
},
plugins: [
new webpack.DefinePlugin({
'process.env': envVars,
}),
],
devtool: 'source-map',
resolve: {
extensions: ['.js', '.json', '.ts', '.tsx'],
},
module: {
rules: [
{
test: /\.(ts|tsx)$/,
loader: 'awesome-typescript-loader',
},
{
test: /\.svg$/,
loader: 'svg-react-loader',
},
],
},
devServer: {
contentBase: path.join(__dirname, 'public'),
port: 5000,
host: '0.0.0.0',
after: () => {
if (config.devServer.host === '0.0.0.0') {
console.log(
`webpack-dev-server can be accessed externally at: http://${ip.address()}:${
config.devServer.port
}`,
);
}
},
},
};
return config;
};
module.exports = (env, _argv) => {
const dischargeTarget = env ? env.discharge_target : undefined;
const configOptions = getConfigForDischargeTarget(dischargeTarget);
return generateConfig(dischargeTarget, configOptions);
};
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