Remove the fs dependency in the TS build.

This should allow users who import dist/parser/stage-2-ast to not make
their compiler freak out.

Before:
- Have a grammar/liquid-html.ohm.js that reads liquid-html.ohm with fs
- Have a build/shims/liquid-html.ohm file that replaces the fs.readFile with the contents of the file
- Have a webpack alias that changes ../../grammar/liquid-html.ohm.js with the shim

After:
- Have a build script that pastes the content of grammar/liquid-html.ohm into grammar/liquid-html.ohm.js as a module.exports = String.raw``;
- Run that script before building
- Run that script before running tests

The advantage now is that there's no fs dependency in the TS build.

Author: charlespwd

.gitignore

@@ -4,7 +4,7 @@ yarn-error.log
 .DS_Store
 dawn
 TODO
-build/shims/liquid-html-ohm.js
+grammar/liquid-html.ohm.js
 standalone.js
 standalone.js.LICENSE.txt
 **/actual.liquid

.mocharc.json

@@ -1,4 +1,4 @@
 {
-  "require": ["ts-node/register/transpile-only", "tsconfig-paths/register"],
+  "require": ["./build/shims", "ts-node/register/transpile-only", "tsconfig-paths/register"],
   "reporter": "spec"
 }

build/shims.js

@@ -1,11 +1,15 @@
 const fs = require('fs');
 const path = require('path');
 
+const grammarPath = path.join(__dirname, '../grammar');
+
 fs.writeFileSync(
-  path.join(__dirname, 'shims/liquid-html-ohm.js'),
+  path.join(grammarPath, 'liquid-html.ohm.js'),
   'module.exports = ' +
     'String.raw`' +
-    require('../grammar/liquid-html.ohm.js').replace(/`/g, '${"`"}') +
+    fs
+      .readFileSync(path.join(grammarPath, 'liquid-html.ohm'), 'utf8')
+      .replace(/`/g, '${"`"}') +
     '`;',
   'utf8',
 );

build/shims/.gitkeep

@@ -25,7 +25,7 @@
     "ThirdPartyNotices.txt"
   ],
   "scripts": {
-    "build": "yarn build:ts && yarn build:shims && yarn build:standalone",
+    "build": "yarn build:shims && yarn build:ts && yarn build:standalone",
     "build:shims": "node build/shims.js",
     "build:standalone": "webpack -c webpack.config.js",
     "build:ts": "tsc -p . && tsc-alias -p tsconfig.json",

grammar/liquid-html.ohm.js

@@ -22,14 +22,6 @@ module.exports = {
       root: 'prettier',
     },
   },
-  resolve: {
-    alias: {
-      '../../grammar/liquid-html.ohm.js': path.resolve(
-        __dirname,
-        'build/shims/liquid-html-ohm.js',
-      ),
-    },
-  },
   optimization: {
     minimize: PRODUCTION ? true : false,
   },