Fix lint issues

cli.js

@@ -89,7 +89,7 @@ Promise
 	.then(pkg => {
 		console.log(`\n ${pkg.name} ${pkg.version} published 🎉`);
 	})
-	.catch(err => {
-		console.error(`\n${logSymbols.error} ${err.message}`);
+	.catch(error => {
+		console.error(`\n${logSymbols.error} ${error.message}`);
 		process.exit(1);
 	});

lib/prerequisite.js

@@ -22,8 +22,8 @@ module.exports = (input, pkg, opts) => {
 			title: 'Verify user is authenticated',
 			skip: () => process.env.NODE_ENV === 'test' || pkg.private || isExternalRegistry,
 			task: () => execa.stdout('npm', ['whoami'])
-				.catch(err => {
-					throw new Error(/ENEEDAUTH/.test(err.stderr) ?
+				.catch(error => {
+					throw new Error(/ENEEDAUTH/.test(error.stderr) ?
 						'You must be logged in to publish packages. Use `npm login` and try again.' :
 						'Authentication error. Use `npm whoami` to troubleshoot.');
 				})
@@ -41,8 +41,8 @@ module.exports = (input, pkg, opts) => {
 		{
 			title: 'Check git remote',
 			task: () => execa.stdout('git', ['ls-remote', 'origin', 'HEAD'])
-				.catch(err => {
-					throw new Error(err.stderr.replace('fatal:', 'Git fatal error:'));
+				.catch(error => {
+					throw new Error(error.stderr.replace('fatal:', 'Git fatal error:'));
 				})
 		},
 		{

lib/ui.js

@@ -29,7 +29,7 @@ function prettyVersionDiff(oldVersion, inc) {
 }
 
 function printCommitLog(repositoryUrl) {
-	return execa.stdout('git', ['rev-list', `--tags`, '--max-count=1'])
+	return execa.stdout('git', ['rev-list', '--tags', '--max-count=1'])
 		.then(latestHash => execa.stdout('git', ['log', '--format=%s %h', `${latestHash}..HEAD`]))
 		.then(result => {
 			if (!result) {

lib/util.js

@@ -7,7 +7,7 @@ exports.readPkg = () => {
 	const {pkg} = readPkgUp.sync();
 
 	if (!pkg) {
-		throw new Error(`No package.json found. Make sure you're in the correct project.`);
+		throw new Error('No package.json found. Make sure you\'re in the correct project.');
 	}
 
 	return pkg;

package.json

@@ -50,7 +50,7 @@
 		"update-notifier": "^2.1.0"
 	},
 	"devDependencies": {
-		"ava": "*",
-		"xo": "*"
+		"ava": "^0.25.0",
+		"xo": "^0.23.0"
 	}
 }