Initial bit of prettier, with recommended .prettierrc

Note: I only ran prettier on `src/core`. The reason for this is that this prettier config will mangle some code.

It is not the fault of a single prettier plugin, or the prettier version. Instead, it is when 3 plugins are used together that this issue happens.

It is kind of difficult to describe - you can see the error on the bash language defintion

`npx prettier src/languages/prism-bash.ts --write`

Additionally, I did not want to work super hard on forming eslint to the prettier config until we committed to this approach. I would love feedback.

Author: robert-j-webb

.eslintrc.js

@@ -0,0 +1,17 @@
+{
+	"plugins": [
+		"prettier-plugin-brace-style",
+		"prettier-plugin-space-before-function-paren",
+		"prettier-plugin-merge"
+	],
+	"braceStyle": "stroustrup",
+	"arrowParens": "avoid",
+	"bracketSpacing": true,
+	"endOfLine": "auto",
+	"semi": true,
+	"singleQuote": false,
+	"tabWidth": 4,
+	"useTabs": true,
+	"trailingComma": "all",
+	"printWidth": 100
+}

.prettierrc

@@ -40,6 +40,7 @@
 		"@babel/core": "^7.18.13",
 		"@babel/preset-env": "^7.18.10",
 		"@babel/register": "^7.18.9",
+		"@prettier/sync": "^0.5.2",
 		"@rollup/plugin-terser": "^0.4.3",
 		"@rollup/plugin-typescript": "^11.1.1",
 		"@types/benchmark": "^2.1.2",
@@ -48,7 +49,7 @@
 		"@types/jsdom": "^20.0.0",
 		"@types/mocha": "^9.1.1",
 		"@types/node": "^20.2.5",
-		"@types/prettier": "^2.7.0",
+		"@types/prettier": "^2.7.3",
 		"@types/yargs": "^17.0.11",
 		"@typescript-eslint/eslint-plugin": "^5.59.8",
 		"@typescript-eslint/parser": "^5.59.8",
@@ -70,7 +71,10 @@
 		"mocha": "^9.2.2",
 		"mocha-chai-jest-snapshot": "^1.1.4",
 		"npm-run-all": "^4.1.5",
-		"prettier": "^2.7.1",
+		"prettier": "^3.5.3",
+		"prettier-plugin-brace-style": "^0.7.2",
+		"prettier-plugin-merge": "^0.7.2",
+		"prettier-plugin-space-before-function-paren": "^0.0.5",
 		"refa": "^0.9.1",
 		"regexp-ast-analysis": "^0.2.4",
 		"regexpp": "^3.2.0",

package-lock.json

@@ -6,11 +6,11 @@ export type StateKey<T> = (string | symbol) & { __keyType?: T };
 export class HookState {
 	private _data = new Map<string | symbol, {}>();
 
-	has(key: StateKey<{}>): boolean {
+	has (key: StateKey<{}>): boolean {
 		return this._data.has(key);
 	}
 
-	get<T extends {}>(key: StateKey<T>, defaultValue: T) {
+	get <T extends {}>(key: StateKey<T>, defaultValue: T) {
 		let current = this._data.get(key);
 		if (current === undefined) {
 			current = defaultValue;
@@ -19,7 +19,7 @@ export class HookState {
 		return current as T;
 	}
 
-	set<T extends {}>(key: StateKey<T>, value: T): void {
+	set <T extends {}>(key: StateKey<T>, value: T): void {
 		this._data.set(key, value);
 	}
 }