Merge pull request #1 from bashmish/feat/esbuild-plugins

feat: ✨ added support for esbuild plugins

package.json

@@ -100,6 +100,7 @@
   },
   "dependencies": {
     "source-map-support": "0.5.19",
+    "temp-write": "^4.0.0",
     "tslib": "2.3.1"
   }
 }

src/hook.ts

@@ -1,8 +1,8 @@
 import InternalModule from "module"
-import { loaders, transpile, supports, TranspileOptions } from "./esbuild"
 import { install as installSourceMapSupport } from "source-map-support"
-import fs from "fs"
-import path from "path"
+import { loaders, loadersSupport } from "./loaders"
+import { transpile } from "./transpile"
+import type { TranspileOptions } from "./types"
 
 type PatchedModule = InternalModule & {
   _extensions: Record<string, (mod: PatchedModule, filename: string) => void>
@@ -11,46 +11,21 @@ type PatchedModule = InternalModule & {
 
 const Module = InternalModule as unknown as PatchedModule
 
-export function findUp(name: string, cwd = process.cwd()): string | undefined {
-  let up = path.resolve(cwd)
-  do {
-    cwd = up
-    const p = path.resolve(cwd, name)
-    if (fs.existsSync(p)) return p
-    up = path.resolve(cwd, "..")
-  } while (up !== cwd)
-}
-
-function loadConfig() {
-  const configFile = findUp("esbuild-runner.config.js")
-  if (configFile) {
-    try {
-      // eslint-disable-next-line @typescript-eslint/no-var-requires, unicorn/prefer-module
-      const ret = require(configFile) as TranspileOptions
-      return ret
-    } catch (error) {
-      // eslint-disable-next-line no-console
-      console.error(
-        `[esbuild-runner] could not load "esbuild-runner.config.js"\n`
-      )
-      throw error
-    }
-  }
-}
-
-export function install(options?: Partial<TranspileOptions>) {
-  options = { ...loadConfig(), ...options }
+export function install(transpileOptions?: Partial<TranspileOptions>) {
   installSourceMapSupport({ hookRequire: true })
   const defaultLoaderJS = Module._extensions[".js"]
   for (const ext in loaders) {
     const defaultLoader = Module._extensions[ext] || defaultLoaderJS
 
     Module._extensions[ext] = (mod: PatchedModule, filename: string) => {
-      if (supports(filename)) {
+      if (loadersSupport(filename)) {
         const defaultCompile = mod._compile
         mod._compile = (code: string) => {
           mod._compile = defaultCompile
-          return mod._compile(transpile(code, filename, options), filename)
+          return mod._compile(
+            transpile(code, filename, transpileOptions),
+            filename
+          )
         }
       }
       defaultLoader(mod, filename)

src/index.ts

@@ -1,2 +1,4 @@
-export * from "./esbuild"
 export * from "./hook"
+export * from "./loaders"
+export * from "./transpile"
+export * from "./types"

src/jest.ts

@@ -1,5 +1,5 @@
-import { transpile } from "./esbuild"
 import "./register"
+import { transpile } from "./transpile"
 
 function process(src: string, filename: string) {
   return transpile(src, filename, { type: "transform" })

src/loaders.ts

@@ -0,0 +1,19 @@
+import { Loader } from "esbuild"
+import path from "path"
+
+export const loaders: Record<string, Loader> = {
+  ".js": "js",
+  ".mjs": "js",
+  ".cjs": "js",
+  ".jsx": "jsx",
+  ".ts": "ts",
+  ".tsx": "tsx",
+  // ".css": "css",
+  ".json": "json",
+  // ".txt": "text",
+}
+
+export function loadersSupport(filename: string) {
+  if (filename.includes("node_modules")) return false
+  return path.extname(filename) in loaders
+}