feat: fix publishing of manifests (#35)

Updates the publish flow a little so we no longer rely on importing JSON
files.

Instead, we use sync FS calls to read the files at runtime. This will be
slower I imagine, but means we can ship one copy of the manifests.

manifests/native.json

@@ -68,17 +68,15 @@
       "type": "native",
       "moduleName": "hasown",
       "nodeVersion": "0.10.0",
-      "replacement":
-        "Object.prototype.hasOwnProperty.call(obj, prop) (or in later versions of node, \"Object.hasOwn(obj, prop)\")",
+      "replacement": "Object.prototype.hasOwnProperty.call(obj, prop) (or in later versions of node, \"Object.hasOwn(obj, prop)\")",
       "mdnPath": "Global_Objects/Object/hasOwnProperty",
       "category": "native"
     },
     {
       "type": "native",
       "moduleName": "has-own-prop",
       "nodeVersion": "0.10.0",
-      "replacement":
-        "Object.prototype.hasOwnProperty.call(obj, prop) (or in later versions of node, \"Object.hasOwn(obj, prop)\")",
+      "replacement": "Object.prototype.hasOwnProperty.call(obj, prop) (or in later versions of node, \"Object.hasOwn(obj, prop)\")",
       "mdnPath": "Global_Objects/Object/hasOwnProperty",
       "category": "native"
     },
@@ -102,35 +100,31 @@
       "type": "native",
       "moduleName": "node.extend",
       "nodeVersion": "4.0.0",
-      "replacement":
-        "Object.assign, or if deep clones are needed, use structuredClone",
+      "replacement": "Object.assign, or if deep clones are needed, use structuredClone",
       "mdnPath": "Global_Objects/Object/assign",
       "category": "native"
     },
     {
       "type": "native",
       "moduleName": "extend-shallow",
       "nodeVersion": "4.0.0",
-      "replacement":
-        "Object.assign, or if deep clones are needed, use structuredClone",
+      "replacement": "Object.assign, or if deep clones are needed, use structuredClone",
       "mdnPath": "Global_Objects/Object/assign",
       "category": "native"
     },
     {
       "type": "native",
       "moduleName": "xtend",
       "nodeVersion": "4.0.0",
-      "replacement":
-        "Object.assign, or if deep clones are needed, use structuredClone",
+      "replacement": "Object.assign, or if deep clones are needed, use structuredClone",
       "mdnPath": "Global_Objects/Object/assign",
       "category": "native"
     },
     {
       "type": "native",
       "moduleName": "defaults",
       "nodeVersion": "4.0.0",
-      "replacement":
-        "Object.assign, or if deep clones are needed, use structuredClone",
+      "replacement": "Object.assign, or if deep clones are needed, use structuredClone",
       "mdnPath": "Global_Objects/Object/assign",
       "category": "native"
     },

package.json

@@ -5,10 +5,10 @@
   "main": "./dist/commonjs/main.js",
   "scripts": {
     "clean": "rimraf dist",
-    "prepare": "tshy && npm run build:copy-manifests",
+    "prepare": "tshy && npm run build:update-manifest-paths",
     "format": "prettier --write \"./src/**/*.ts\" \"./manifests/**/*.json\"",
     "build:types": "tsc --noEmit",
-    "build:copy-manifests": "cp -R manifests dist/manifests",
+    "build:update-manifest-paths": "node scripts/update-manifests-dist-path.js",
     "build": "npm run clean && npm run build:types",
     "validate-manifests": "node scripts/validate-manifests.js",
     "generate-schema": "node scripts/generate-schema.js"
@@ -33,6 +33,7 @@
   },
   "homepage": "https://github.com/es-tooling/module-replacements#readme",
   "devDependencies": {
+    "@types/node": "^20.14.9",
     "ajv": "^8.16.0",
     "prettier": "^3.2.4",
     "rimraf": "^5.0.5",

scripts/update-manifests-dist-path.js

@@ -0,0 +1,16 @@
+import {readFile, writeFile} from 'node:fs/promises';
+import {fileURLToPath} from 'node:url';
+import * as path from 'node:path';
+
+const scriptDir = fileURLToPath(new URL('.', import.meta.url));
+const distPath = path.resolve(scriptDir, '../dist');
+const flavours = ['esm', 'commonjs']
+
+for (const flavour of flavours) {
+  const flavourPath = `${distPath}/${flavour}/manifests-dir.js`;
+  const contents = await readFile(flavourPath, 'utf8');
+  await writeFile(flavourPath, contents.replaceAll(
+    '../manifests',
+    '../../manifests'
+  ));
+}

src/main.ts

@@ -1,19 +1,20 @@
-import native from '../manifests/native.json';
-import microUtils from '../manifests/micro-utilities.json';
-import preferred from '../manifests/preferred.json';
+import {readFileSync} from 'node:fs';
 import {ManifestModule} from './types.js';
+import {manifestsDir} from './manifests-dir.js';
 
-const nativeReplacements = native as ManifestModule;
-const microUtilsReplacements = microUtils as ManifestModule;
-const preferredReplacements = preferred as ManifestModule;
+const nativeReplacements = JSON.parse(
+  readFileSync(`${manifestsDir}/native.json`, 'utf8')
+) as ManifestModule;
+const microUtilsReplacements = JSON.parse(
+  readFileSync(`${manifestsDir}/micro-utilities.json`, 'utf8')
+) as ManifestModule;
+const preferredReplacements = JSON.parse(
+  readFileSync(`${manifestsDir}/preferred.json`, 'utf8')
+) as ManifestModule;
 
 export * from './types.js';
 
-export {
-  nativeReplacements,
-  microUtilsReplacements,
-  preferredReplacements
-};
+export {nativeReplacements, microUtilsReplacements, preferredReplacements};
 
 export const all: ManifestModule = {
   moduleReplacements: [

src/manifests-dir-cjs.cts

@@ -0,0 +1,4 @@
+import * as path from 'node:path';
+
+const currentDir = __dirname;
+export const manifestsDir = path.resolve(currentDir, '../manifests');

src/manifests-dir.ts

@@ -0,0 +1,6 @@
+import {fileURLToPath} from 'node:url';
+import * as path from 'node:path';
+
+// @ts-ignore filthy cjs/esm polyfill hacks so we can have import.meta
+const currentDir = fileURLToPath(new URL('.', import.meta.url));
+export const manifestsDir = path.resolve(currentDir, '../manifests');

src/types.ts

@@ -25,10 +25,11 @@ export interface NoModuleReplacement extends ModuleReplacementLike {
   type: 'none';
 }
 
-export type ModuleReplacement = DocumentedModuleReplacement |
-  NativeModuleReplacement |
-  SimpleModuleReplacement |
-  NoModuleReplacement;
+export type ModuleReplacement =
+  | DocumentedModuleReplacement
+  | NativeModuleReplacement
+  | SimpleModuleReplacement
+  | NoModuleReplacement;
 
 export interface ManifestModule {
   moduleReplacements: ModuleReplacement[];

tsconfig.json

@@ -3,8 +3,7 @@
     "target": "es2020",
     "module": "nodenext",
     "moduleResolution": "nodenext",
-    "resolveJsonModule": true,
-    "types": [],
+    "types": ["node"],
     "declaration": true,
     "isolatedModules": true,
     "forceConsistentCasingInFileNames": true,