import getClientRect from '../utils/getClientRect';
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import getOppositePlacement from '../utils/getOppositePlacement';
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/**
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* @function
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* @memberof Modifiers
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* @argument {Object} data - The data object generated by `update` method
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* @argument {Object} options - Modifiers configuration and options
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* @returns {Object} The data object, properly modified
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*/
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export default function inner(data) {
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const placement = data.placement;
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const basePlacement = placement.split('-')[0];
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const { popper, reference } = data.offsets;
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const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;
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const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;
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popper[isHoriz ? 'left' : 'top'] =
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reference[basePlacement] -
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(subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);
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data.placement = getOppositePlacement(placement);
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data.offsets.popper = getClientRect(popper);
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return data;
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}
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