perf(core): light entries for safe paths, asset paths and the runtime script (#4642)

packages/core/package-subpaths.json

@@ -38,6 +38,24 @@
       "types": "./dist/utils/htmlAttrSafety.d.ts",
       "environments": ["browser", "bun", "node"]
     },
+    "./safe-path": {
+      "source": "./src/safePath.ts",
+      "runtime": "./dist/safePath.js",
+      "types": "./dist/safePath.d.ts",
+      "environments": ["bun", "node"]
+    },
+    "./asset-paths": {
+      "source": "./src/compiler/rewriteSubCompPaths.ts",
+      "runtime": "./dist/compiler/rewriteSubCompPaths.js",
+      "types": "./dist/compiler/rewriteSubCompPaths.d.ts",
+      "environments": ["bun", "node"]
+    },
+    "./runtime-script": {
+      "source": "./src/generated/runtime-inline.ts",
+      "runtime": "./dist/generated/runtime-inline.js",
+      "types": "./dist/generated/runtime-inline.d.ts",
+      "environments": ["browser", "bun", "node"]
+    },
     "./rich-text-sanitize": {
       "source": "./src/utils/richTextSanitize.ts",
       "runtime": "./dist/utils/richTextSanitize.js",

packages/core/package.json

@@ -52,6 +52,24 @@
       "import": "./src/utils/htmlAttrSafety.ts",
       "types": "./src/utils/htmlAttrSafety.ts"
     },
+    "./safe-path": {
+      "bun": "./src/safePath.ts",
+      "node": "./dist/safePath.js",
+      "import": "./src/safePath.ts",
+      "types": "./src/safePath.ts"
+    },
+    "./asset-paths": {
+      "bun": "./src/compiler/rewriteSubCompPaths.ts",
+      "node": "./dist/compiler/rewriteSubCompPaths.js",
+      "import": "./src/compiler/rewriteSubCompPaths.ts",
+      "types": "./src/compiler/rewriteSubCompPaths.ts"
+    },
+    "./runtime-script": {
+      "bun": "./src/generated/runtime-inline.ts",
+      "node": "./dist/generated/runtime-inline.js",
+      "import": "./src/generated/runtime-inline.ts",
+      "types": "./src/generated/runtime-inline.ts"
+    },
     "./rich-text-sanitize": {
       "bun": "./src/utils/richTextSanitize.ts",
       "node": "./dist/utils/richTextSanitize.js",
@@ -470,6 +488,18 @@
         "import": "./dist/utils/htmlAttrSafety.js",
         "types": "./dist/utils/htmlAttrSafety.d.ts"
       },
+      "./safe-path": {
+        "import": "./dist/safePath.js",
+        "types": "./dist/safePath.d.ts"
+      },
+      "./asset-paths": {
+        "import": "./dist/compiler/rewriteSubCompPaths.js",
+        "types": "./dist/compiler/rewriteSubCompPaths.d.ts"
+      },
+      "./runtime-script": {
+        "import": "./dist/generated/runtime-inline.js",
+        "types": "./dist/generated/runtime-inline.d.ts"
+      },
       "./rich-text-sanitize": {
         "import": "./dist/utils/richTextSanitize.js",
         "types": "./dist/utils/richTextSanitize.d.ts"

packages/core/src/lightEntries.test.ts

@@ -0,0 +1,28 @@
+// @vitest-environment node
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+import { buildSync } from "esbuild";
+import { describe, expect, it } from "vitest";
+
+const packageDir = resolve(import.meta.dirname, "..");
+const { subpaths } = JSON.parse(readFileSync(resolve(packageDir, "package-subpaths.json"), "utf8"));
+const HEAVY = /[\\/](recast|ast-types|@babel[\\/]parser|acorn|esprima|linkedom|postcss)[\\/]/;
+
+function loadedModules(entry: string): string[] {
+  const { metafile } = buildSync({
+    entryPoints: [resolve(packageDir, subpaths[entry].source)],
+    bundle: true,
+    platform: "node",
+    format: "esm",
+    write: false,
+    metafile: true,
+    logLevel: "silent",
+  });
+  return Object.keys(metafile.inputs);
+}
+
+describe("entries a host imports for one helper", () => {
+  it.each(["./safe-path", "./asset-paths"])("%s loads none of the parsers", (entry) => {
+    expect(loadedModules(entry).filter((path) => HEAVY.test(path))).toEqual([]);
+  });
+});