41 lines
1.0 KiB
JavaScript
41 lines
1.0 KiB
JavaScript
const EventEmitter = require('events')
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const IDB = require('idb-global')
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const KEY = 'metamask-test-config'
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module.exports = class Helper extends EventEmitter {
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constructor () {
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super()
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}
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tryToCleanContext () {
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this.unregister()
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.then(() => this.clearDb())
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.then(() => super.emit('complete'))
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.catch((err) => super.emit('complete'))
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}
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unregister () {
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return global.navigator.serviceWorker.getRegistration()
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.then((registration) => {
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if (registration) return registration.unregister()
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.then((b) => b ? Promise.resolve() : Promise.reject())
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else return Promise.resolve()
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})
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}
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clearDb () {
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return new Promise ((resolve, reject) => {
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const deleteRequest = global.indexDB.deleteDatabase(KEY)
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deleteRequest.addEventListener('success', resolve)
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deleteRequest.addEventListener('error', reject)
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})
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}
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mockState (state) {
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const db = new IDB({
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version: 2,
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key: KEY,
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initialState: state
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})
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return db.open()
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}
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}
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