Add conditional exports

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "parquet-wasm"
-version = "0.5.0"
+version = "0.6.0-beta.1"
 authors = ["Kyle Barron <[email protected]>"]
 edition = "2021"
 description = "WebAssembly Parquet reader and writer."

scripts/build.sh

@@ -99,7 +99,12 @@ cp tmp_build/{bundler,bundler2}/arrow* pkg/bundler/
 cp tmp_build/{esm,esm2}/arrow* pkg/esm
 cp tmp_build/{node,node2}/arrow* pkg/node
 
-cp tmp_build/bundler/{package.json,LICENSE_APACHE,LICENSE_MIT,README.md} pkg/
+cp tmp_build/bundler/{LICENSE_APACHE,LICENSE_MIT,README.md} pkg/
+
+# Copy in combined package.json from template
+# https://stackoverflow.com/a/24904276
+# Note that keys from the second file will overwrite keys from the first.
+jq -s '.[0] * .[1]' templates/package.json tmp_build/bundler/package.json > pkg/package.json
 
 # Create minimal package.json in esm/ folder with type: module
 echo '{"type": "module"}' > pkg/esm/package.json

templates/package.json

@@ -0,0 +1,59 @@
+{
+  "name": "parquet-wasm",
+  "collaborators": [
+    "Kyle Barron <[email protected]>"
+  ],
+  "description": "WebAssembly Parquet reader and writer.",
+  "version": "0.5.0",
+  "license": "MIT OR Apache-2.0",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/kylebarron/parquet-wasm"
+  },
+  "files": [
+    "*"
+  ],
+  "module": "bundler/arrow2.js",
+  "types": "bundler/arrow2.d.ts",
+  "sideEffects": [
+    "./arrow1.js",
+    "./snippets/*"
+  ],
+  "keywords": [
+    "parquet",
+    "webassembly",
+    "arrow"
+  ],
+  "exports": {
+    "./arrow1": {
+      "import": {
+        "types": "./esm/arrow1.d.ts",
+        "import": "./esm/arrow1.js"
+      },
+      "browser": {
+        "types": "./esm/arrow1.d.ts",
+        "import": "./esm/arrow1.js"
+      },
+      "node": {
+        "types": "./node/arrow1.d.ts",
+        "require": "./node/arrow1.js",
+        "import": "./node/arrow1.js"
+      }
+    },
+    "./arrow2": {
+      "import": {
+        "types": "./esm/arrow2.d.ts",
+        "import": "./esm/arrow2.js"
+      },
+      "browser": {
+        "types": "./esm/arrow2.d.ts",
+        "import": "./esm/arrow2.js"
+      },
+      "node": {
+        "types": "./node/arrow2.d.ts",
+        "require": "./node/arrow2.js",
+        "import": "./node/arrow2.js"
+      }
+    }
+  }
+}