planning

node_modules/stringify-entities/lib/util/format-basic.js

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+module.exports = formatBasic
+
+function formatBasic(code) {
+  return '&#x' + code.toString(16).toUpperCase() + ';'
+}

node_modules/stringify-entities/lib/util/format-smart.js

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+module.exports = formatPretty
+
+var toHexadecimal = require('./to-hexadecimal')
+var toDecimal = require('./to-decimal')
+var toNamed = require('./to-named')
+
+// Encode `character` according to `options`.
+function formatPretty(code, next, options) {
+  var named
+  var numeric
+  var decimal
+
+  if (options.useNamedReferences || options.useShortestReferences) {
+    named = toNamed(
+      code,
+      next,
+      options.omitOptionalSemicolons,
+      options.attribute
+    )
+  }
+
+  if (options.useShortestReferences || !named) {
+    numeric = toHexadecimal(code, next, options.omitOptionalSemicolons)
+
+    // Use the shortest numeric reference when requested.
+    // A simple algorithm would use decimal for all code points under 100, as
+    // those are shorter than hexadecimal:
+    //
+    // * `c` vs `c` (decimal shorter)
+    // * `d` vs `d` (equal)
+    //
+    // However, because we take `next` into consideration when `omit` is used,
+    // And it would be possible that decimals are shorter on bigger values as
+    // well if `next` is hexadecimal but not decimal, we instead compare both.
+    if (options.useShortestReferences) {
+      decimal = toDecimal(code, next, options.omitOptionalSemicolons)
+
+      if (decimal.length < numeric.length) {
+        numeric = decimal
+      }
+    }
+  }
+
+  return named &&
+    (!options.useShortestReferences || named.length < numeric.length)
+    ? named
+    : numeric
+}

node_modules/stringify-entities/lib/util/to-decimal.js

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+module.exports = toDecimalReference
+
+var fromCharCode = require('../constant/from-char-code')
+
+// Transform `code` into a decimal character reference.
+function toDecimalReference(code, next, omit) {
+  var value = '&#' + String(code)
+  return omit && next && !/\d/.test(fromCharCode(next)) ? value : value + ';'
+}

node_modules/stringify-entities/lib/util/to-hexadecimal.js

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+module.exports = toHexReference
+
+var fromCharCode = require('../constant/from-char-code')
+
+// Transform `code` into a hexadecimal character reference.
+function toHexReference(code, next, omit) {
+  var value = '&#x' + code.toString(16).toUpperCase()
+  return omit && next && !/[\dA-Fa-f]/.test(fromCharCode(next))
+    ? value
+    : value + ';'
+}

node_modules/stringify-entities/lib/util/to-named.js

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+module.exports = toNamed
+
+var legacy = require('character-entities-legacy')
+var characters = require('../constant/characters')
+var fromCharCode = require('../constant/from-char-code')
+var own = require('../constant/has-own-property')
+var dangerous = require('../constant/dangerous.json')
+
+// Transform `code` into a named character reference.
+function toNamed(code, next, omit, attribute) {
+  var character = fromCharCode(code)
+  var name
+  var value
+
+  if (own.call(characters, character)) {
+    name = characters[character]
+    value = '&' + name
+
+    if (
+      omit &&
+      own.call(legacy, name) &&
+      dangerous.indexOf(name) === -1 &&
+      (!attribute ||
+        (next && next !== 61 /* `=` */ && /[^\da-z]/i.test(fromCharCode(next))))
+    ) {
+      return value
+    }
+
+    return value + ';'
+  }
+
+  return ''
+}