pedantic code generation stuff

package.json

@@ -22,6 +22,7 @@
   ],
   "scripts": {
     "test": "mocha --opts mocha.opts",
+    "test:unit": "mocha --require sucrase/register --recursive ./**/__test__.ts",
     "quicktest": "mocha --opts mocha.opts",
     "precoverage": "c8 mocha --opts mocha.coverage.opts",
     "coverage": "c8 report --reporter=text-lcov > coverage.lcov && c8 report --reporter=html",

src/utils/__test__.ts

@@ -34,6 +34,45 @@ describe('deindent', () => {
 
 		assert.equal(deindented, `before\n\tline one\n\tline two\nafter`);
 	});
+
+	it('removes newlines before an empty expression', () => {
+		const deindented = deindent`
+			{
+				some text
+
+				${null}
+			}`;
+
+		assert.equal(deindented, `{\n\tsome text\n}`);
+	});
+
+	it('removes newlines after an empty expression', () => {
+		const deindented = deindent`
+			{
+				${null}
+
+				some text
+			}`;
+
+		assert.equal(deindented, `{\n\tsome text\n}`);
+	});
+
+	it('removes newlines around empty expressions', () => {
+		const deindented = deindent`
+			{
+				${null}
+
+				some text
+
+				${null}
+
+				some text
+
+				${null}
+			}`;
+
+		assert.equal(deindented, `{\n\tsome text\n\n\tsome text\n}`);
+	});
 });
 
 describe('CodeBuilder', () => {

src/utils/deindent.ts

@@ -39,7 +39,7 @@ export default function deindent(
 		current_indentation = get_current_indentation(result);
 	}
 
-	return result.trim().replace(/\t+$/gm, '');
+	return result.trim().replace(/\t+$/gm, '').replace(/{\n\n/gm, '{\n');
 }
 
 function get_current_indentation(str: string) {