Re-add eslint and prettier RC files

.eslintrc.cjs

@@ -0,0 +1,59 @@
+/* Copyright © 2021 Exact Realty Limited.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+module.exports = {
+	root: true,
+	parser: '@typescript-eslint/parser',
+	plugins: ['@typescript-eslint'],
+	env: { node: true },
+	extends: [
+		'eslint:recommended',
+		'plugin:@typescript-eslint/recommended',
+		'prettier',
+		'plugin:prettier/recommended',
+	],
+	rules: {
+		'@typescript-eslint/naming-convention': [
+			'error',
+			{
+				selector: 'typeParameter',
+				format: ['PascalCase'],
+				prefix: ['T'],
+			},
+			{
+				selector: 'interface',
+				format: ['PascalCase'],
+				prefix: ['I'],
+			},
+			{
+				selector: 'enumMember',
+				format: ['UPPER_CASE'],
+			},
+			{
+				selector: 'variable',
+				modifiers: ['exported'],
+				format: ['camelCase', 'PascalCase'],
+			},
+			{
+				selector: 'typeProperty',
+				format: ['camelCase'],
+			},
+			{
+				selector: 'method',
+				format: ['camelCase'],
+			},
+		],
+	},
+};

.prettierrc.cjs

@@ -0,0 +1,23 @@
+/* Copyright © 2021 Exact Realty Limited.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+module.exports = {
+  semi: true,
+  trailingComma: "all",
+  singleQuote: true,
+  printWidth: 80,
+  tabWidth: 4,
+  useTabs: true,
+};