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webpack.config.js
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webpack.config.js
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const fs = require("fs-extra");
const path = require("path");
const webpack = require("webpack");
const nodeExternals = require("webpack-node-externals");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const PrettierPlugin = require("prettier-webpack-plugin");
const pkg = require("./package.json");
const mode =
process.env.NODE_ENV === "production" ? "production" : "development";
const isDevMode = mode === "development";
const prodEntries = {
index: ["./src/index.ts"]
};
const outDir = "dist";
const entries = isDevMode
? {
...prodEntries,
index: ["webpack/hot/poll?1000", "./src/index.ts"]
}
: prodEntries;
fs.removeSync(path.resolve(__dirname, outDir));
const buildNum = () => {
if (process.env.CI) {
const build = `-build[${process.env.CIRCLE_BUILD_NUM}]`;
if (process.env.CIRCLE_BRANCH === "master") {
return build;
}
if (process.env.CIRCLE_BRANCH === "develop") {
return `${build}(dev)`;
}
return `${build}(pr:${process.env.CIRCLE_PR_NUMBER})`;
}
return "-(local)";
};
module.exports = {
target: "node",
mode,
node: {
__dirname: false,
__filename: false
},
context: __dirname,
entry: entries,
externals: [
nodeExternals({
whitelist: ["webpack/hot/poll?1000"]
})
],
devtool: "source-map",
optimization: {
minimize: false
},
devServer: {
hot: true,
contentBase: path.resolve(__dirname),
publicPath: "/"
},
resolve: {
extensions: [".ts", ".js"],
alias: {}
},
plugins: [
...(isDevMode ? [] : [new CleanWebpackPlugin()]),
new webpack.DefinePlugin({
VERSION: JSON.stringify(pkg.version + buildNum())
}),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoEmitOnErrorsPlugin(),
new webpack.NamedModulesPlugin(),
new PrettierPlugin()
],
module: {
rules: [
{
test: /\.tsx?$/,
loader: "ts-loader",
exclude: /node_modules/
}
]
},
output: {
filename: "[name].js",
path: path.resolve(__dirname, outDir),
devtoolModuleFilenameTemplate(info) {
return path.resolve(__dirname, encodeURI(info.resourcePath));
},
library: "[name]",
libraryTarget: "umd"
}
};