Remove Emscripten Node error handling from built library

[nrabinowitz]

Fixes #7

Stacktrace before change:

$ node test.js 
/Users/nickr/dev/h3-js/dist/out/libh3.js:4
var Module=typeof libh3!=="undefined"?libh3:{};var moduleOverrides={};var key;for(key in Module){if(Module.hasOwnProperty(key)){moduleOverrides[key]=Module[key]}}Module["arguments"]=[];Module["thisProgram"]="./this.program";Module["quit"]=(function(status,toThrow){throw toThrow});Module["preRun"]=[];Module["postRun"]=[];var ENVIRONMENT_IS_WEB=false;var ENVIRONMENT_IS_WORKER=false;var ENVIRONMENT_IS_NODE=false;var ENVIRONMENT_IS_SHELL=false;if(Module["ENVIRONMENT"]){if(Module["ENVIRONMENT"]==="WEB"){ENVIRONMENT_IS_WEB=true}else if(Module["ENVIRONMENT"]==="WORKER"){ENVIRONMENT_IS_WORKER=true}else if(Module["ENVIRONMENT"]==="NODE"){ENVIRONMENT_IS_NODE=true}else if(Module["ENVIRONMENT"]==="SHELL"){ENVIRONMENT_IS_SHELL=true}else{throw new Error("Module['ENVIRONMENT'] value is not valid. must be one of: WEB|WORKER|NODE|SHELL.")}}else{ENVIRONMENT_IS_WEB=typeof window==="object";ENVIRONMENT_IS_WORKER=typeof importScripts==="function";ENVIRONMENT_IS_NODE=typeof process==="o

Error: Unknown unit: undefined
    at Object.hexArea (/Users/nickr/dev/h3-js/dist/lib/h3core.js:940:19)
    at Object.<anonymous> (/Users/nickr/dev/h3-js/test.js:2:4)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
    at startup (internal/bootstrap/node.js:266:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:596:3)

Stacktrace after change:

$ node test.js 
/Users/nickr/dev/h3-js/dist/lib/h3core.js:910
            throw new Error(("Unknown unit: " + unit));
            ^

Error: Unknown unit: undefined
    at Object.hexArea (/Users/nickr/dev/h3-js/dist/lib/h3core.js:910:19)
    at Object.<anonymous> (/Users/nickr/dev/h3-js/test.js:2:4)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
    at startup (internal/bootstrap/node.js:266:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:596:3)

[coveralls]

Pull Request Test Coverage Report for Build 27

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 23:	0.0%
Covered Lines:	356
Relevant Lines:	356

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 28

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 23:	0.0%
Covered Lines:	7
Relevant Lines:	7

---

💛 - Coveralls

[isaachier]

Have you considered using .gitattributes to treat out/libh3.js as a binary file? It would avoid GitHub trying to make a diff of it. Otherwise, LGTM.

[nrabinowitz]

Have you considered using .gitattributes to treat out/libh3.js as a binary file?

Good catch, we have this, but it looks like it didn't get updated when we changed the lib file name. Fixed in the latest commit.