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-rw-r--r--js/src/dom/data.js55
1 files changed, 55 insertions, 0 deletions
diff --git a/js/src/dom/data.js b/js/src/dom/data.js
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+/**
+ * --------------------------------------------------------------------------
+ * Bootstrap (v5.2.3): 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)
+ }
+ }
+}