aboutsummaryrefslogtreecommitdiff
path: root/node_modules/code-point-at/index.js
diff options
context:
space:
mode:
authorFlorian Dold <florian.dold@gmail.com>2017-05-03 15:35:00 +0200
committerFlorian Dold <florian.dold@gmail.com>2017-05-03 15:35:00 +0200
commitde98e0b232509d5f40c135d540a70e415272ff85 (patch)
treea79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/code-point-at/index.js
parente0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff)
node_modules
Diffstat (limited to 'node_modules/code-point-at/index.js')
-rw-r--r--node_modules/code-point-at/index.js32
1 files changed, 32 insertions, 0 deletions
diff --git a/node_modules/code-point-at/index.js b/node_modules/code-point-at/index.js
new file mode 100644
index 000000000..0432fe6a3
--- /dev/null
+++ b/node_modules/code-point-at/index.js
@@ -0,0 +1,32 @@
+/* eslint-disable babel/new-cap, xo/throw-new-error */
+'use strict';
+module.exports = function (str, pos) {
+ if (str === null || str === undefined) {
+ throw TypeError();
+ }
+
+ str = String(str);
+
+ var size = str.length;
+ var i = pos ? Number(pos) : 0;
+
+ if (Number.isNaN(i)) {
+ i = 0;
+ }
+
+ if (i < 0 || i >= size) {
+ return undefined;
+ }
+
+ var first = str.charCodeAt(i);
+
+ if (first >= 0xD800 && first <= 0xDBFF && size > i + 1) {
+ var second = str.charCodeAt(i + 1);
+
+ if (second >= 0xDC00 && second <= 0xDFFF) {
+ return ((first - 0xD800) * 0x400) + second - 0xDC00 + 0x10000;
+ }
+ }
+
+ return first;
+};