refactor: separate out webpacking for tests (#1678)

test/localIntegrationRunner.html

@@ -17,7 +17,7 @@
       mocha.ui('bdd')
     </script>
 
-    <script src="../testCompiledForWeb/index.js"></script>
+    <script src="./testCompiledForWeb/index.js"></script>
 
     <script>
       mocha.run()

test/webpack.config.js

@@ -0,0 +1,79 @@
+'use strict'
+const path = require('path')
+const webpack = require('webpack')
+const assert = require('assert')
+
+function webpackForTest(testFileName) {
+  const match = testFileName.match(/\/?([^\/]*)\.ts$/)
+  if (!match) {
+    assert(false, 'wrong filename:' + testFileName)
+  }
+
+  const test = {
+    mode: 'production',
+    cache: true,
+    externals: [
+      {
+        'xrpl-local': 'xrpl',
+        net: 'null',
+      },
+    ],
+    entry: testFileName,
+    output: {
+      library: match[1].replace(/-/g, '_'),
+      path: path.join(__dirname, './testCompiledForWeb/'),
+      filename: match[1] + '.js',
+    },
+    plugins: [
+      new webpack.ProvidePlugin({ process: 'process/browser' }),
+      new webpack.ProvidePlugin({ Buffer: ['buffer', 'Buffer'] }),
+    ],
+    module: {
+      rules: [
+        {
+          test: /jayson/,
+          use: 'null',
+        },
+        {
+          test: /\.ts$/,
+          use: [
+            {
+              loader: 'ts-loader',
+              options: {
+                compilerOptions: {
+                  composite: false,
+                  declaration: false,
+                  declarationMap: false,
+                },
+              },
+            },
+          ],
+        },
+      ],
+    },
+    node: {
+      global: true,
+      __filename: false,
+      __dirname: true,
+    },
+    resolve: {
+      alias: {
+        ws: './dist/npm/client/wsWrapper.js',
+        'https-proxy-agent': false,
+      },
+      extensions: ['.ts', '.js', '.json'],
+      fallback: {
+        buffer: require.resolve('buffer/'),
+        assert: require.resolve('assert/'),
+        url: require.resolve('url/'),
+        stream: require.resolve('stream-browserify'),
+        crypto: require.resolve('crypto-browserify'),
+        path: require.resolve('path-browserify'),
+        http: require.resolve('stream-http'),
+      },
+    },
+  }
+  return test
+}
+
+module.exports = [(env, argv) => webpackForTest('./test/integration/index.ts')]