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<script>
import { isEqual } from 'lodash';
export default {
props: {
storageKey: {
type: String,
required: true,
},
value: {
type: [String, Number, Boolean, Array, Object],
required: false,
default: '',
},
asJson: {
type: Boolean,
required: false,
default: false,
},
persist: {
type: Boolean,
required: false,
default: true,
},
clear: {
type: Boolean,
required: false,
default: false,
},
},
watch: {
value(newVal) {
this.saveValue(this.serialize(newVal));
},
clear(newVal) {
if (newVal) {
localStorage.removeItem(this.storageKey);
}
},
},
mounted() {
// On mount, trigger update if we actually have a localStorageValue
const { exists, value } = this.getStorageValue();
if (exists && !isEqual(value, this.value)) {
this.$emit('input', value);
}
},
methods: {
getStorageValue() {
const value = localStorage.getItem(this.storageKey);
if (value === null) {
return { exists: false };
}
try {
return { exists: true, value: this.deserialize(value) };
} catch {
// eslint-disable-next-line no-console
console.warn(
`[gitlab] Failed to deserialize value from localStorage (key=${this.storageKey})`,
value,
);
// default to "don't use localStorage value"
return { exists: false };
}
},
saveValue(val) {
if (!this.persist) return;
localStorage.setItem(this.storageKey, val);
},
serialize(val) {
return this.asJson ? JSON.stringify(val) : val;
},
deserialize(val) {
return this.asJson ? JSON.parse(val) : val;
},
},
render() {
return this.$slots.default;
},
};
</script>
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