Public commit

scripts/plugins/esbuild-alias.ts

@@ -0,0 +1,24 @@
+// https://github.com/igoradamenko/esbuild-plugin-alias/blob/master/index.js
+// MIT License. Copyright (c) 2021 Igor Adamenko
+import type { Plugin } from "esbuild"
+
+export function alias(options: Record<string, string>): Plugin {
+  const aliases = Object.keys(options)
+  const re = new RegExp(`^(${aliases.map(x => escapeRegExp(x)).join("|")})$`)
+
+  return {
+    name: "alias",
+    setup(build) {
+      // we do not register 'file' namespace here, because the root file won't be processed
+      // https://github.com/evanw/esbuild/issues/791
+      build.onResolve({ filter: re }, args => ({
+        path: options[args.path],
+      }))
+    },
+  }
+}
+
+function escapeRegExp(string: string) {
+  // $& means the whole matched string
+  return string.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")
+}