Salesforce lightning datatable inline editing using Lwc

<lightning-datatable
      onsave={handleSave}
      draft-values={draftValues}>
</lightning-datatable>

import { deleteRecord, updateRecord } from 'lightning/uiRecordApi';
import PHONE_FIELD from '@salesforce/schema/Contact.Phone';
import ID_FIELD from '@salesforce/schema/Contact.Id';
import { ShowToastEvent } from 'lightning/platformShowToastEvent';

@track draftValues = [];
    handleSave(event) {
        const fields = {};
        fields[ID_FIELD.fieldApiName] = event.detail.draftValues[0].id;
        fields[PHONE_FIELD.fieldApiName] = event.detail.draftValues[0].phone;
        const recordInput = {fields};
        updateRecord(recordInput)
        .then(() => {
            this.dispatchEvent(
                new ShowToastEvent({
                    title: 'Success',
                    message: 'Contact updated',
                    variant: 'success'
                })
            );
            // Display fresh data in the datatable
            return refreshApex(this.wiredRecordList).then(() => {
                // Clear all draft values in the datatable
                this.draftValues = [];
            });
        }).catch(error => {
            this.dispatchEvent(
                new ShowToastEvent({
                    title: 'Error updating or reloading record',
                    message: error.body.message,
                    variant: 'error'
                })
            );
        });
    }

<template>
    <div style="background-color: white; border-bottom-style:double;">
        <lightning-layout multiple-rows="true" horizontal-align="center" vertical-align="center">
            <lightning-layout-item padding="around-small" size="5" style="position: absolute; left: 0%;">
                <span class="slds-var-p-right_x-small" style="font-size: 16px; font-weight: bold;">担当者</span>
                <span class="slds-var-p-right_x-small" style="font-size: 32px; font-weight: bold;">{recordLength}</span>
                <span class="slds-var-p-right_x-small" style="font-size: 16px; font-weight: bold;">件</span>
            </lightning-layout-item>
            <lightning-layout-item padding="around-small" size="2">
                <span>&nbsp;</span>
            </lightning-layout-item>
            <lightning-layout-item padding="around-small" size="5" style="position: absolute; left: 80%;">
                <a style="background-color: #333333; color: white; padding: 10px; display: inline;" onclick={refresh}>
                    <lightning-icon class="slds-button__icon
                    slds-icon-utility-down slds-icon_container forceIcon" icon-name="utility:refresh" size="x-small">
                    </lightning-icon>
                </a>
                <span>&nbsp;</span>
                <a style="background-color: #333333; color: white; padding: 10px; display: inline;" onclick={handleDeleteClick}>
                    <lightning-icon class="slds-button__icon
                    slds-icon-utility-down slds-icon_container forceIcon" icon-name="utility:delete" size="x-small">
                    </lightning-icon>
                </a>
                <span>&nbsp;</span>
                <a style="background-color: #333333; color: white; padding: 10px; display: inline;" onclick={handleCreateClick}>
                    <lightning-icon class="slds-button__icon
                    slds-icon-utility-down slds-icon_container forceIcon" icon-name="utility:add" size="x-small">
                    </lightning-icon>
                </a>
            </lightning-layout-item>
        </lightning-layout>
    </div>
    <div style="height: 300px;">
        <lightning-datatable
                show-row-number-column
                max-row-selection="1"
                onrowselection={handelSelection}
                key-field="id"
                data={records}
                columns={columns}
                default-sort-direction={defaultSortDirection}
                sorted-direction={sortDirection}
                sorted-by={sortedBy}
                onsort={onHandleSort}
                onsave={handleSave}
                draft-values={draftValues}>
        </lightning-datatable>
    </div>
</template>

import { LightningElement, wire, track } from 'lwc';
import getContactListView from '@salesforce/apex/MC_ContactListViewController.getContactListView';
import { loadStyle } from 'lightning/platformResourceLoader';
import COMMON_STATIC from '@salesforce/resourceUrl/common_sfdc_css';
import { refreshApex } from '@salesforce/apex';
import { deleteRecord, updateRecord } from 'lightning/uiRecordApi';
import PHONE_FIELD from '@salesforce/schema/Contact.Phone';
import ID_FIELD from '@salesforce/schema/Contact.Id';
import { ShowToastEvent } from 'lightning/platformShowToastEvent';
const columns = [
    //{ label: 'Name', fieldName: 'name', type: 'text', sortable: true },
    { label: 'Name', fieldName: 'idLink', type: 'url', sortable: true,
        typeAttributes: { label: { fieldName: 'name' }, target: '_self' }, initialWidth: 300 },
    { label: 'Email', fieldName: 'email', type: 'text', sortable: true },
    { label: 'Phone', fieldName: 'phone', type: 'text', sortable: true, editable: true },
    { label: 'OwnerName', fieldName: 'ownerName', type: 'text', sortable: true },
    { label: 'Birthdate', fieldName: 'birthdate', type: 'date', sortable: true },
];

export default class BasicDatatable extends LightningElement {
    columns = columns;
    @track refreshFlag = false;
    @track wiredRecordList = [];
    @track records;
    @track recordLength;
    @track selectedRecord;

    renderedCallback() {
        Promise.all([
            loadStyle(this, COMMON_STATIC + '/mcCommon.css')
        ]);
    }
    // eslint-disable-next-line @lwc/lwc/no-async-await
    async connectedCallback() {
    }

    @wire(getContactListView, {refreshFlag : '$refreshFlag'})
    wireRecords(result) {
        console.log('>>>>>result>>'+JSON.stringify(result));
        this.refreshFlag = false;
        this.wiredRecordList = result;
        if (result.data) {
            this.records = result.data;
            this.recordLength = result.data.length;
        } else if (result.error) {
            // エラー
        }
    }
    // refresh
    refresh() {
        refreshApex(this.wiredRecordList);
    }
    handelSelection(event) {
        if (event.detail.selectedRows.length > 0) {
            this.selectedRecord = event.detail.selectedRows[0].id;
        }
    }
    handleDeleteClick() {
        deleteRecord(this.selectedRecord)
        .then(() => {
            refreshApex(this.wiredRecordList);
        })
        .catch(error => {
        })
    }

    handleCreateClick() {
        let __self = this;
        let openUrl = '/s/contactcreatedata';
        let target = '_blank';
        let w = 680;
        let h = 580;
        let newWindow = window.open(openUrl, target, 'width=' + w + ',height=' + h)
            let iv = window.setInterval(function () {
                if (newWindow.closed) {
                    refreshApex(__self.wiredRecordList);
                    clearInterval(iv);
                }
            }, 1000);
    }

    @track defaultSortDirection = 'asc';
    @track sortDirection = 'asc';
    @track sortedBy;
    onHandleSort(event) {
        const { fieldName: sortedBy, sortDirection } = event.detail;
        let fields = new Map();
        fields.set('idLink', 'name');
        let sortByField = '';
        if (fields.has(sortedBy) ) {
            sortByField = fields.get(sortedBy);
        } else {
            sortByField = sortedBy;
        }
        const cloneData = [...this.records];
        cloneData.sort(this.sortBy(sortByField, sortDirection === 'asc' ? 1 : -1));
        console.log('>>cloneData>>:'+cloneData);
        this.records = cloneData;
        this.sortDirection = sortDirection;
        this.sortedBy = sortedBy;
    }

    sortBy(field, reverse, primer) {
        const key = primer
            ? function (x) {
                return primer(x[field]);
            }
            : function (x) {
                return x[field];
            };

        return function (a, b) {
            a = key(a);
            b = key(b);
            return reverse * ((a > b) - (b > a));
        };
    }

    @track draftValues = [];
    handleSave(event) {
        const fields = {};
        fields[ID_FIELD.fieldApiName] = event.detail.draftValues[0].id;
        fields[PHONE_FIELD.fieldApiName] = event.detail.draftValues[0].phone;
        const recordInput = {fields};
        updateRecord(recordInput)
        .then(() => {
            this.dispatchEvent(
                new ShowToastEvent({
                    title: 'Success',
                    message: 'Contact updated',
                    variant: 'success'
                })
            );
            // Display fresh data in the datatable
            return refreshApex(this.wiredRecordList).then(() => {
                // Clear all draft values in the datatable
                this.draftValues = [];
            });
        }).catch(error => {
            this.dispatchEvent(
                new ShowToastEvent({
                    title: 'Error updating or reloading record',
                    message: error.body.message,
                    variant: 'error'
                })
            );
        });
    }
}