dd_xcx/node_modules/@antv/util/esm/index-of.js

import isArrayLike from './is-array-like';
var indexOf = function (arr, obj) {
    if (!isArrayLike(arr)) {
        return -1;
    }
    var m = Array.prototype.indexOf;
    if (m) {
        return m.call(arr, obj);
    }
    var index = -1;
    for (var i = 0; i < arr.length; i++) {
        if (arr[i] === obj) {
            index = i;
            break;
        }
    }
    return index;
};
export default indexOf;
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