1 files changed, 134 insertions, 0 deletions
diff --git a/assets/node_modules/stringify-entities/index.js b/assets/node_modules/stringify-entities/index.js
new file mode 100644
index 0000000..2f55802
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+++ b/assets/node_modules/stringify-entities/index.js
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+'use strict'
+
+var entities = require('character-entities-html4')
+var legacy = require('character-entities-legacy')
+var hexadecimal = require('is-hexadecimal')
+var alphanumerical = require('is-alphanumerical')
+var dangerous = require('./dangerous.json')
+
+/* Expose. */
+module.exports = encode
+encode.escape = escape
+
+var own = {}.hasOwnProperty
+
+/* List of enforced escapes. */
+var escapes = ['"', "'", '<', '>', '&', '`']
+
+/* Map of characters to names. */
+var characters = construct()
+
+/* Default escapes. */
+var defaultEscapes = toExpression(escapes)
+
+/* Surrogate pairs. */
+var surrogatePair = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g
+
+/* Non-ASCII characters. */
+// eslint-disable-next-line no-control-regex, unicorn/no-hex-escape
+var bmp = /[\x01-\t\x0B\f\x0E-\x1F\x7F\x81\x8D\x8F\x90\x9D\xA0-\uFFFF]/g
+
+/* Encode special characters in `value`. */
+function encode(value, options) {
+  var settings = options || {}
+  var subset = settings.subset
+  var set = subset ? toExpression(subset) : defaultEscapes
+  var escapeOnly = settings.escapeOnly
+  var omit = settings.omitOptionalSemicolons
+
+  value = value.replace(set, function(char, pos, val) {
+    return one(char, val.charAt(pos + 1), settings)
+  })
+
+  if (subset || escapeOnly) {
+    return value
+  }
+
+  return value
+    .replace(surrogatePair, replaceSurrogatePair)
+    .replace(bmp, replaceBmp)
+
+  function replaceSurrogatePair(pair, pos, val) {
+    return toHexReference(
+      (pair.charCodeAt(0) - 0xd800) * 0x400 +
+        pair.charCodeAt(1) -
+        0xdc00 +
+        0x10000,
+      val.charAt(pos + 2),
+      omit
+    )
+  }
+
+  function replaceBmp(char, pos, val) {
+    return one(char, val.charAt(pos + 1), settings)
+  }
+}
+
+/* Shortcut to escape special characters in HTML. */
+function escape(value) {
+  return encode(value, {
+    escapeOnly: true,
+    useNamedReferences: true
+  })
+}
+
+/* Encode `char` according to `options`. */
+function one(char, next, options) {
+  var shortest = options.useShortestReferences
+  var omit = options.omitOptionalSemicolons
+  var named
+  var numeric
+
+  if ((shortest || options.useNamedReferences) && own.call(characters, char)) {
+    named = toNamed(characters[char], next, omit, options.attribute)
+  }
+
+  if (shortest || !named) {
+    numeric = toHexReference(char.charCodeAt(0), next, omit)
+  }
+
+  if (named && (!shortest || named.length < numeric.length)) {
+    return named
+  }
+
+  return numeric
+}
+
+/* Transform `code` into an entity. */
+function toNamed(name, next, omit, attribute) {
+  var value = '&' + name
+
+  if (
+    omit &&
+    own.call(legacy, name) &&
+    dangerous.indexOf(name) === -1 &&
+    (!attribute || (next && next !== '=' && !alphanumerical(next)))
+  ) {
+    return value
+  }
+
+  return value + ';'
+}
+
+/* Transform `code` into a hexadecimal character reference. */
+function toHexReference(code, next, omit) {
+  var value = '&#x' + code.toString(16).toUpperCase()
+  return omit && next && !hexadecimal(next) ? value : value + ';'
+}
+
+/* Create an expression for `characters`. */
+function toExpression(characters) {
+  return new RegExp('[' + characters.join('') + ']', 'g')
+}
+
+/* Construct the map. */
+function construct() {
+  var chars = {}
+  var name
+
+  for (name in entities) {
+    chars[entities[name]] = name
+  }
+
+  return chars
+}