Initial commit

frontend/node_modules/bidi-js/src/brackets.js

@@ -0,0 +1,45 @@
+import data from './data/bidiBrackets.data.js'
+import { parseCharacterMap } from './util/parseCharacterMap.js'
+
+let openToClose, closeToOpen, canonical
+
+function parse () {
+  if (!openToClose) {
+    //const start = performance.now()
+    let { map, reverseMap } = parseCharacterMap(data.pairs, true)
+    openToClose = map
+    closeToOpen = reverseMap
+    canonical = parseCharacterMap(data.canonical, false).map
+    //console.log(`brackets parsed in ${performance.now() - start}ms`)
+  }
+}
+
+/**
+ * Get the opening bracket character corresponding to a given closing bracket character.
+ * @param {string} char
+ * @returns {string | null}
+ */
+export function openingToClosingBracket (char) {
+  parse()
+  return openToClose.get(char) || null
+}
+
+/**
+ * Get the closing bracket character corresponding to a given opening bracket character.
+ * @param {string} char
+ * @returns {string | null}
+ */
+export function closingToOpeningBracket (char) {
+  parse()
+  return closeToOpen.get(char) || null
+}
+
+/**
+ * Retrieves the canonical form of a bracket character.
+ * @param {string} char
+ * @returns {string | null}
+ */
+export function getCanonicalBracket (char) {
+  parse()
+  return canonical.get(char) || null
+}