Fail to compile wasm locally

[wangtz]

This site is great starting point for learning wasm. However it doesn't seem to work locally with "Download" button.

I tried gulp --require ts-node/register --gulpfile ./build.ts and got the following errors:

[08:59:33] Requiring external module ts-node/register
ReferenceError: primordials is not defined
at fs.js:35:5
at req_ (/usr/local/google/home/wangtz/projects/emcc/v3/node_modules/natives/index.js:143:24)
at Object.req [as require] (/usr/local/google/home/wangtz/projects/emcc/v3/node_modules/natives/index.js:55:10)
at Object. (/usr/local/google/home/wangtz/projects/emcc/v3/node_modules/graceful-fs/fs.js:1:37)
at Module._compile (internal/modules/cjs/loader.js:1138:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)
at Module.load (internal/modules/cjs/loader.js:986:32)
at Function.Module._load (internal/modules/cjs/loader.js:879:14)
at Module.require (internal/modules/cjs/loader.js:1026:19)
at require (internal/modules/cjs/helpers.js:72:18)

Here is my tsconfig.json file (I copied it from this repo).

{
"compilerOptions": {
"outDir": "./dist/",
"sourceMap": true,
"noImplicitAny": true,
"skipLibCheck": true,
// "module": "esnext",
"moduleResolution": "node",
"target": "esnext",
"lib": ["dom", "esnext", "es2017.object"],
"jsx": "react",
"declaration": true,
"removeComments": false
},
"include": [
"./src//*",
"node_modules/monaco-editor/monaco.d.ts"
],
"exclude": [
"./templates//*"
]
}

Any help will be appreciated. Thanks!

[nokotan]

Related issue: Gulp 3 is broken on Node 12 #2324

Upgrading Gulp to 4 and rewriting build.ts, or Downgrading Node to v10 brings me successful build in my environment.