Demo for query storing
Change-Id: I947bcac841992c3f6cfd01ab337c265b0d01cb70
diff --git a/node_modules/es-abstract/2020/CodePointAt.js b/node_modules/es-abstract/2020/CodePointAt.js
new file mode 100644
index 0000000..b887631
--- /dev/null
+++ b/node_modules/es-abstract/2020/CodePointAt.js
@@ -0,0 +1,58 @@
+'use strict';
+
+var GetIntrinsic = require('get-intrinsic');
+
+var $TypeError = GetIntrinsic('%TypeError%');
+var callBound = require('call-bind/callBound');
+var isLeadingSurrogate = require('../helpers/isLeadingSurrogate');
+var isTrailingSurrogate = require('../helpers/isTrailingSurrogate');
+
+var Type = require('./Type');
+var UTF16DecodeSurrogatePair = require('./UTF16DecodeSurrogatePair');
+
+var $charAt = callBound('String.prototype.charAt');
+var $charCodeAt = callBound('String.prototype.charCodeAt');
+
+// https://262.ecma-international.org/11.0/#sec-codepointat
+
+module.exports = function CodePointAt(string, position) {
+ if (Type(string) !== 'String') {
+ throw new $TypeError('Assertion failed: `string` must be a String');
+ }
+ var size = string.length;
+ if (position < 0 || position >= size) {
+ throw new $TypeError('Assertion failed: `position` must be >= 0, and < the length of `string`');
+ }
+ var first = $charCodeAt(string, position);
+ var cp = $charAt(string, position);
+ var firstIsLeading = isLeadingSurrogate(first);
+ var firstIsTrailing = isTrailingSurrogate(first);
+ if (!firstIsLeading && !firstIsTrailing) {
+ return {
+ '[[CodePoint]]': cp,
+ '[[CodeUnitCount]]': 1,
+ '[[IsUnpairedSurrogate]]': false
+ };
+ }
+ if (firstIsTrailing || (position + 1 === size)) {
+ return {
+ '[[CodePoint]]': cp,
+ '[[CodeUnitCount]]': 1,
+ '[[IsUnpairedSurrogate]]': true
+ };
+ }
+ var second = $charCodeAt(string, position + 1);
+ if (!isTrailingSurrogate(second)) {
+ return {
+ '[[CodePoint]]': cp,
+ '[[CodeUnitCount]]': 1,
+ '[[IsUnpairedSurrogate]]': true
+ };
+ }
+
+ return {
+ '[[CodePoint]]': UTF16DecodeSurrogatePair(first, second),
+ '[[CodeUnitCount]]': 2,
+ '[[IsUnpairedSurrogate]]': false
+ };
+};