refactor!: migrate from @swc/core to @swc/wasm-web

README.md

@@ -30,7 +30,7 @@ Transform tests to documentation:
 
 ```typescript
 assertEquals(
-  await transform(
+  transform(
     await Deno.readTextFile("./fixtures/input.ts"),
   ),
   await Deno.readTextFile("./fixtures/output.md"),
@@ -42,7 +42,7 @@ assertEquals(
 Parse `describe` and `it` from tests:
 
 ```typescript
-const describes = await parse(
+const describes = parse(
   await Deno.readTextFile("./fixtures/input.ts"),
 );
 assertObjectMatch(describes[0], {

deno.json

@@ -10,18 +10,18 @@
     ]
   },
   "tasks": {
+    "cache": "deno cache --frozen=false **/*.ts",
     "check": "deno fmt -q && deno lint -q && deno check -q **/*.ts",
     "doc": "deno run --allow-env --allow-ffi --allow-read --allow-run=deno --allow-sys --allow-write=README.md ./docs/build.ts",
     "test": "deno test --allow-env --allow-ffi --allow-read --allow-sys --no-check",
-    "pre-commit": "deno task check && deno task test && deno task doc"
+    "pre-commit": "deno task cache && deno task check && deno task test && deno task doc"
   },
   "imports": {
     "@core/match": "jsr:@core/match@^0.3.1",
     "@std/assert": "jsr:@std/assert@^1.0.0",
     "@std/collections": "jsr:@std/collections@^1.0.0",
     "@std/testing": "jsr:@std/testing@^0.225.0",
-    "@swc/core": "npm:@swc/core@^1.5.24",
-    "@swc/types": "npm:@swc/types@^0.1.7",
+    "@swc/wasm-web": "npm:@swc/wasm-web@^1.7.4",
     "dedent": "npm:dedent@^1.5.3"
   }
 }

src/parse.ts

@@ -1,10 +1,10 @@
 import { match, placeholder as _ } from "@core/match";
 import { mapNotNullish } from "@std/collections";
-import type { Statement } from "@swc/types";
-// @deno-types="@swc/core";
-import * as swc from "@swc/core";
+import initSwc, { parseSync, type Statement } from "@swc/wasm-web";
 import type { Describe } from "./types.ts";
 
+await initSwc();
+
 const describePattern = {
   type: "ExpressionStatement",
   expression: {
@@ -43,8 +43,8 @@ type ItPrecursor = {
  * Parse a test code string to an array of describe objects.
  * @param src The test code string.
  */
-export default async function parse(src: string): Promise<Describe[]> {
-  const { body, span } = await swc.parse(src, {
+export default function parse(src: string): Describe[] {
+  const { body, span } = parseSync(src, {
     comments: true,
     syntax: "typescript",
   });

src/parse_test.ts

@@ -4,7 +4,7 @@ import parse from "./parse.ts";
 
 describe("parse", () => {
   it("should parse `describe` and `it` from tests", async () => {
-    const describes = await parse(
+    const describes = parse(
       await Deno.readTextFile("./fixtures/input.ts"),
     );
     assertObjectMatch(describes[0], {

src/transform.ts

@@ -14,9 +14,9 @@ export interface TransformOptions extends StringifyOptions {
  * @param src The test code string.
  * @param options The options for transforming.
  */
-export default async function transform(
+export default function transform(
   src: string,
   options: TransformOptions = {},
-): Promise<string> {
-  return stringify(await parse(src), options);
+): string {
+  return stringify(parse(src), options);
 }

src/transform_test.ts

@@ -5,7 +5,7 @@ import transform from "./transform.ts";
 describe("transform", () => {
   it("should transform tests to documentation", async () => {
     assertEquals(
-      await transform(
+      transform(
         await Deno.readTextFile("./fixtures/input.ts"),
       ),
       await Deno.readTextFile("./fixtures/output.md"),