Vue warn All In One

Vue warn All In One

ES6 solution

[Vue warn]: Error in mounted hook: "TypeError: Invalid attempt to spread non-iterable instance.

// ❌
this.labelList = [...this.ruleForm.adLabels];

// ✅
+ this.labelList = [...this?.ruleForm?.adLabels ?? []];
// OR 
// ✅
+ this.labelList = this?.ruleForm?.adLabels ?? [];

refs

https://github.com/vuejs/vue-cli/issues/1303#issuecomment-921655366

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