examples: checkpoint

mostly for record keeping; me vs javascript tooling round 5000

tried to drop the preprocessing in parcel-plugin-wasm.rs by going with --target web
turns out that doesn't make any sense
didn't realize this until _after_ writing it though; i've now seen way more parcel innards than i ever thought i'd need too
(somehow the actual type of the generated field for assets is just not documented — reading the other assets to figure it out actually hurts more than it helps)
((also, parcel uses flow but not for these parts))

import.meta also made things pretty irritating (babel/babel#11364)

went on an hour long detour through all the wasm-pack/wasm-bindgen options and how to best expose/use them through the plugin

tried to use the bundler option (when not running on Node) also explodes in spectacular fashion; somehow parcel's wasm load just doesn't pass in imports

I'm actually starting to think the find and replace scheme that's used right now is actually optimal..
So, really, it's parcel's fault.

Webpack does the right thing here: parcel-bundler/parcel#647

I was going to say that this plugin (parcel-plugin-wasm-pack) manages to do better but really they do the exact same thing in a slightly less clumsy way: https://github.com/mysterycommand/parcel-plugin-wasm-pack/blob/f204a708d964127aaa1e5d278f41a44f5d76393b/src/WasmPackAsset.js#L174-L179
They do have tests though which is commendable

examples/package.json

@@ -6,16 +6,27 @@
   "license": "MIT",
   "scripts": {
     "watch": "parcel index.html",
-    "release": "WASM_PACK_PROFILE=release parcel build index.html"
+    "release": "WASM_PACK_PROFILE=release NODE_ENV=production parcel build index.html",
+    "//": "drop WASM_PACK_PROFILE=release when (if) things get merged"
   },
   "dependencies": {
     "xterm": "^4.5.0",
     "xterm-addon-fit": "^0.3.0",
     "xterm-addon-web-links": "^0.3.0"
   },
   "devDependencies": {
+    "@babel/core": "^7.9.6",
+    "@babel/plugin-syntax-dynamic-import": "^7.8.3",
+    "@babel/plugin-syntax-import-meta": "^7.8.3",
     "parcel-bundler": "^1.12.4",
-    "parcel-plugin-wasm.rs": "^1.2.15",
+    "parcel-plugin-wasm.rs": "rrbutani/parcel-plugin-wasm.rs",
+    "//": "^ should be switched back if/when the PR gets merged..",
+    "//parcel-plugin-wasm.rs": "file:../../../../../JS/parcel-plugin-wasm.rs",
     "typescript": "^3.8.3"
+  },
+  "babel": {
+    "plugins": [
+      "@babel/plugin-syntax-import-meta"
+    ]
   }
 }