VLEX/BPM-UI/node_modules/ngx-bootstrap/positioning/esm2015/modifiers/shift.js

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * @param {?} data
 * @return {?}
 */
export function shift(data) {
    /** @type {?} */
    const placement = data.placement;
    /** @type {?} */
    const basePlacement = placement.split(' ')[0];
    /** @type {?} */
    const shiftvariation = placement.split(' ')[1];
    if (shiftvariation) {
        const { host, target } = data.offsets;
        /** @type {?} */
        const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
        /** @type {?} */
        const side = isVertical ? 'left' : 'top';
        /** @type {?} */
        const measurement = isVertical ? 'width' : 'height';
        /** @type {?} */
        const shiftOffsets = {
            start: { [side]: host[side] },
            end: {
                [side]: host[side] + host[measurement] - target[measurement]
            }
        };
        data.offsets.target = Object.assign({}, target, ((/** @type {?} */ (shiftOffsets)))[shiftvariation]);
    }
    return data;
}
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