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/**
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* --------------------------------------------------------------------------
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* Bootstrap dom/data.js
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
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* --------------------------------------------------------------------------
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*/
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/**
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* Constants
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*/
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const elementMap = new Map()
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export default {
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set(element, key, instance) {
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if (!elementMap.has(element)) {
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elementMap.set(element, new Map())
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}
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const instanceMap = elementMap.get(element)
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// make it clear we only want one instance per element
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// can be removed later when multiple key/instances are fine to be used
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if (!instanceMap.has(key) && instanceMap.size !== 0) {
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// eslint-disable-next-line no-console
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console.error(`Bootstrap doesn't allow more than one instance per element. Bound instance: ${Array.from(instanceMap.keys())[0]}.`)
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return
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}
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instanceMap.set(key, instance)
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},
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get(element, key) {
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if (elementMap.has(element)) {
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return elementMap.get(element).get(key) || null
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}
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return null
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},
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remove(element, key) {
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if (!elementMap.has(element)) {
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return
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}
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const instanceMap = elementMap.get(element)
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instanceMap.delete(key)
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// free up element references if there are no instances left for an element
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if (instanceMap.size === 0) {
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elementMap.delete(element)
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}
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}
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}
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