summaryrefslogtreecommitdiff
path: root/node_modules/string-width-cjs/index.js
diff options
context:
space:
mode:
Diffstat (limited to 'node_modules/string-width-cjs/index.js')
-rw-r--r--node_modules/string-width-cjs/index.js47
1 files changed, 47 insertions, 0 deletions
diff --git a/node_modules/string-width-cjs/index.js b/node_modules/string-width-cjs/index.js
new file mode 100644
index 0000000..f4d261a
--- /dev/null
+++ b/node_modules/string-width-cjs/index.js
@@ -0,0 +1,47 @@
+'use strict';
+const stripAnsi = require('strip-ansi');
+const isFullwidthCodePoint = require('is-fullwidth-code-point');
+const emojiRegex = require('emoji-regex');
+
+const stringWidth = string => {
+ if (typeof string !== 'string' || string.length === 0) {
+ return 0;
+ }
+
+ string = stripAnsi(string);
+
+ if (string.length === 0) {
+ return 0;
+ }
+
+ string = string.replace(emojiRegex(), ' ');
+
+ let width = 0;
+
+ for (let i = 0; i < string.length; i++) {
+ const code = string.codePointAt(i);
+
+ // Ignore control characters
+ if (code <= 0x1F || (code >= 0x7F && code <= 0x9F)) {
+ continue;
+ }
+
+ // Ignore combining characters
+ if (code >= 0x300 && code <= 0x36F) {
+ continue;
+ }
+
+ // Surrogates
+ if (code > 0xFFFF) {
+ i++;
+ }
+
+ width += isFullwidthCodePoint(code) ? 2 : 1;
+ }
+
+ return width;
+};
+
+module.exports = stringWidth;
+// TODO: remove this in the next major version
+module.exports.default = stringWidth;