Fix: make strict for flatten ternary expr (fixes #625) (#675)

Author: mysticatea

lib/utils/indent-common.js

@@ -984,12 +984,16 @@ module.exports.defineVisitor = function create (context, tokenStore, defaultOpti
     },
 
     ConditionalExpression (node) {
+      const prevToken = tokenStore.getTokenBefore(node)
       const firstToken = tokenStore.getFirstToken(node)
       const questionToken = tokenStore.getTokenAfter(node.test, isNotRightParen)
       const consequentToken = tokenStore.getTokenAfter(questionToken)
       const colonToken = tokenStore.getTokenAfter(node.consequent, isNotRightParen)
       const alternateToken = tokenStore.getTokenAfter(colonToken)
-      const isFlat = (node.test.loc.end.line === node.consequent.loc.start.line)
+      const isFlat =
+        prevToken &&
+        prevToken.loc.end.line !== node.loc.start.line &&
+        node.test.loc.end.line === node.consequent.loc.start.line
 
       if (isFlat) {
         setOffset([questionToken, consequentToken, colonToken, alternateToken], 0, firstToken)

tests/fixtures/script-indent/issue625.vue

@@ -0,0 +1,12 @@
+<!--{}-->
+<script>
+export default {
+  data() {
+    const hours = new Date().getHours();
+    return {
+      imgUrl: hours > 21 && hours < 6 ? 'night.png' :
+        'day.png',
+    };
+  },
+}
+</script>