From 885e56f5e153297da9e012ba572981697eadd029 Mon Sep 17 00:00:00 2001
From: Marcelo Luiz Onhate <onhate@gmail.com>
Date: Sat, 2 Mar 2024 14:32:38 -0300
Subject: [PATCH] feat: esm + cjs

---
 package.json                        | 25 +++++++++++++++++--------
 postbuild.sh                        |  8 ++++++++
 tsconfig.json => tsconfig.base.json |  5 ++---
 tsconfig.cjs.json                   |  8 ++++++++
 tsconfig.dts.json                   |  8 ++++++++
 tsconfig.esm.json                   |  8 ++++++++
 6 files changed, 51 insertions(+), 11 deletions(-)
 create mode 100755 postbuild.sh
 rename tsconfig.json => tsconfig.base.json (50%)
 create mode 100644 tsconfig.cjs.json
 create mode 100644 tsconfig.dts.json
 create mode 100644 tsconfig.esm.json

diff --git a/package.json b/package.json
index e24df65..e4d63b6 100644
--- a/package.json
+++ b/package.json
@@ -1,23 +1,32 @@
 {
   "name": "datelative",
-  "version": "0.0.3",
+  "version": "0.0.5",
   "description": "A library that converts relative string text to JavaScript dates",
-  "main": "index.js",
-  "types": "index.d.ts",
-  "type": "module",
+  "exports": {
+    ".": {
+      "types": "./dist/dts/index.d.ts",
+      "require": "./dist/cjs/index.js",
+      "import": "./dist/esm/index.js",
+      "default": "./dist/esm/index.js"
+    }
+  },
+
   "scripts": {
     "test": "node --test",
     "test:watch": "node --test --watch",
-    "prepublishOnly": "npx tsc"
+    "prepublishOnly": "npm run build",
+    "clear": "rm -rf dist/*",
+    "prebuild": "npm run clear",
+    "build": "tsc -b ./tsconfig.cjs.json ./tsconfig.esm.json ./tsconfig.dts.json",
+    "postbuild": "./postbuild.sh"
   },
+
   "repository": {
     "type": "git",
     "url": "git+https://github.com/onhate/datelative.git"
   },
   "files": [
-    "index.js",
-    "index.d.ts",
-    "index.d.ts.map",
+    "dist/*",
     "README.md",
     "package.json"
   ],
diff --git a/postbuild.sh b/postbuild.sh
new file mode 100755
index 0000000..cf41689
--- /dev/null
+++ b/postbuild.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+## So entire idea of this script is to generate separate package.json for ESM build (under build/esm directory) with the following content:
+# { "type": "module" }
+# This will tell the consumer build system that the underlying directory has modern EcmaScript modules. Otherwise, it will complain with:
+# SyntaxError: Unexpected token 'export'
+
+echo '{ "type": "module" }' > dist/esm/package.json
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.base.json
similarity index 50%
rename from tsconfig.json
rename to tsconfig.base.json
index 712ee16..7c481a8 100644
--- a/tsconfig.json
+++ b/tsconfig.base.json
@@ -4,8 +4,7 @@
   ],
   "compilerOptions": {
     "allowJs": true,
-    "declaration": true,
-    "emitDeclarationOnly": true,
-    "declarationMap": true
+    "pretty": true,
+    "strict": true
   }
 }
\ No newline at end of file
diff --git a/tsconfig.cjs.json b/tsconfig.cjs.json
new file mode 100644
index 0000000..7b18662
--- /dev/null
+++ b/tsconfig.cjs.json
@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "module": "commonjs",
+    "outDir": "dist/cjs",
+    "target": "es2015"
+  }
+}
\ No newline at end of file
diff --git a/tsconfig.dts.json b/tsconfig.dts.json
new file mode 100644
index 0000000..2ea5290
--- /dev/null
+++ b/tsconfig.dts.json
@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "dist/dts",
+    "declaration": true,
+    "emitDeclarationOnly": true
+  }
+}
\ No newline at end of file
diff --git a/tsconfig.esm.json b/tsconfig.esm.json
new file mode 100644
index 0000000..f2923ba
--- /dev/null
+++ b/tsconfig.esm.json
@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "module": "esnext",
+    "outDir": "dist/esm",
+    "target": "esnext"
+  }
+}
\ No newline at end of file