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