export function loadBMap(ak) {
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return new Promise(function (resolve, reject) {
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if (typeof BMap !== 'undefined') {
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resolve(BMap)
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return true
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}
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window.onBMapCallback = function () {
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resolve(BMap)
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}
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let script = document.createElement('script')
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script.type = 'text/javascript'
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script.src = 'http://api.map.baidu.com/api?v=3.0&ak=' + ak + '&__ec_v__=20190126&callback=onBMapCallback'
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script.onerror = reject
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document.head.appendChild(script)
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})
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}
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