adjust code excerpt line trimming

Author: Vadim Demedes

lib/code-excerpt.js

@@ -19,7 +19,7 @@ module.exports = (file, line, options) => {
 
 	const lines = excerpt.map(item => ({
 		line: item.line,
-		value: truncate(item.value, maxWidth - String(line).length - 1)
+		value: truncate(item.value, maxWidth - String(line).length - 5)
 	}));
 
 	const joinedLines = lines.map(line => line.value).join('\n');

test/code-excerpt.js

@@ -33,9 +33,9 @@ test('truncate lines', t => {
 
 	const excerpt = codeExcerpt(path, 2, {maxWidth: 14});
 	const expected = [
-		` ${chalk.grey('1:')} function a(…`,
-		chalk.bgRed(` 2:   alert();  `),
-		` ${chalk.grey('3:')} }           `
+		` ${chalk.grey('1:')} functio…`,
+		chalk.bgRed(` 2:   alert…`),
+		` ${chalk.grey('3:')} }       `
 	].join('\n');
 
 	t.is(excerpt, expected);