api, login, auth

15 files changed, 1549 insertions, 0 deletions

diff --git a/node_modules/saslprep/.editorconfig b/node_modules/saslprep/.editorconfig
new file mode 100644
index 0000000..d1d8a41
--- /dev/null
+++ b/node_modules/saslprep/.editorconfig
@@ -0,0 +1,10 @@
+# http://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
diff --git a/node_modules/saslprep/.gitattributes b/node_modules/saslprep/.gitattributes
new file mode 100644
index 0000000..3ba4536
--- /dev/null
+++ b/node_modules/saslprep/.gitattributes
@@ -0,0 +1 @@
+*.mem binary
diff --git a/node_modules/saslprep/.travis.yml b/node_modules/saslprep/.travis.yml
new file mode 100644
index 0000000..0bca826
--- /dev/null
+++ b/node_modules/saslprep/.travis.yml
@@ -0,0 +1,10 @@
+sudo: false
+language: node_js
+node_js:
+  - "6"
+  - "8"
+  - "10"
+  - "12"
+
+before_install:
+- npm install -g npm@6
diff --git a/node_modules/saslprep/CHANGELOG.md b/node_modules/saslprep/CHANGELOG.md
new file mode 100644
index 0000000..7798078
--- /dev/null
+++ b/node_modules/saslprep/CHANGELOG.md
@@ -0,0 +1,19 @@
+# Change Log
+All notable changes to the "saslprep" package will be documented in this file.
+
+## [1.0.3] - 2019-05-01
+
+- Correctly get code points >U+FFFF ([#5](https://github.com/reklatsmasters/saslprep/pull/5))
+- Fix perfomance downgrades from [#5](https://github.com/reklatsmasters/saslprep/pull/5).
+
+## [1.0.2] - 2018-09-13
+
+- Reduced initialization time ([#3](https://github.com/reklatsmasters/saslprep/issues/3))
+
+## [1.0.1] - 2018-06-20
+
+- Reduced stack overhead of range creation ([#2](https://github.com/reklatsmasters/saslprep/pull/2))
+
+## [1.0.0] - 2017-06-21
+
+- First release
diff --git a/node_modules/saslprep/LICENSE b/node_modules/saslprep/LICENSE
new file mode 100644
index 0000000..481c7a5
--- /dev/null
+++ b/node_modules/saslprep/LICENSE
@@ -0,0 +1,22 @@
+Copyright (c) 2014 Dmitry Tsvettsikh
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
diff --git a/node_modules/saslprep/code-points.mem b/node_modules/saslprep/code-points.mem
new file mode 100644
index 0000000..4781b06
--- /dev/null
+++ b/node_modules/saslprep/code-points.mem
diff --git a/node_modules/saslprep/generate-code-points.js b/node_modules/saslprep/generate-code-points.js
new file mode 100644
index 0000000..c5162ca
--- /dev/null
+++ b/node_modules/saslprep/generate-code-points.js
@@ -0,0 +1,51 @@
+'use strict';
+
+const bitfield = require('sparse-bitfield');
+const codePoints = require('./lib/code-points');
+
+const unassigned_code_points = bitfield();
+const commonly_mapped_to_nothing = bitfield();
+const non_ascii_space_characters = bitfield();
+const prohibited_characters = bitfield();
+const bidirectional_r_al = bitfield();
+const bidirectional_l = bitfield();
+
+/**
+ * Iterare over code points and
+ * convert it into an buffer.
+ * @param {bitfield} bits
+ * @param {Array} src
+ * @returns {Buffer}
+ */
+function traverse(bits, src) {
+  for (const code of src.keys()) {
+    bits.set(code, true);
+  }
+
+  const buffer = bits.toBuffer();
+  return Buffer.concat([createSize(buffer), buffer]);
+}
+
+/**
+ * @param {Buffer} buffer
+ * @returns {Buffer}
+ */
+function createSize(buffer) {
+  const buf = Buffer.alloc(4);
+  buf.writeUInt32BE(buffer.length);
+
+  return buf;
+}
+
+const memory = [];
+
+memory.push(
+  traverse(unassigned_code_points, codePoints.unassigned_code_points),
+  traverse(commonly_mapped_to_nothing, codePoints.commonly_mapped_to_nothing),
+  traverse(non_ascii_space_characters, codePoints.non_ASCII_space_characters),
+  traverse(prohibited_characters, codePoints.prohibited_characters),
+  traverse(bidirectional_r_al, codePoints.bidirectional_r_al),
+  traverse(bidirectional_l, codePoints.bidirectional_l)
+);
+
+process.stdout.write(Buffer.concat(memory));
diff --git a/node_modules/saslprep/index.js b/node_modules/saslprep/index.js
new file mode 100644
index 0000000..21bb0fe
--- /dev/null
+++ b/node_modules/saslprep/index.js
@@ -0,0 +1,157 @@
+'use strict';
+
+const {
+  unassigned_code_points,
+  commonly_mapped_to_nothing,
+  non_ASCII_space_characters,
+  prohibited_characters,
+  bidirectional_r_al,
+  bidirectional_l,
+} = require('./lib/memory-code-points');
+
+module.exports = saslprep;
+
+// 2.1.  Mapping
+
+/**
+ * non-ASCII space characters [StringPrep, C.1.2] that can be
+ * mapped to SPACE (U+0020)
+ */
+const mapping2space = non_ASCII_space_characters;
+
+/**
+ * the "commonly mapped to nothing" characters [StringPrep, B.1]
+ * that can be mapped to nothing.
+ */
+const mapping2nothing = commonly_mapped_to_nothing;
+
+// utils
+const getCodePoint = character => character.codePointAt(0);
+const first = x => x[0];
+const last = x => x[x.length - 1];
+
+/**
+ * Convert provided string into an array of Unicode Code Points.
+ * Based on https://stackoverflow.com/a/21409165/1556249
+ * and https://www.npmjs.com/package/code-point-at.
+ * @param {string} input
+ * @returns {number[]}
+ */
+function toCodePoints(input) {
+  const codepoints = [];
+  const size = input.length;
+
+  for (let i = 0; i < size; i += 1) {
+    const before = input.charCodeAt(i);
+
+    if (before >= 0xd800 && before <= 0xdbff && size > i + 1) {
+      const next = input.charCodeAt(i + 1);
+
+      if (next >= 0xdc00 && next <= 0xdfff) {
+        codepoints.push((before - 0xd800) * 0x400 + next - 0xdc00 + 0x10000);
+        i += 1;
+        continue;
+      }
+    }
+
+    codepoints.push(before);
+  }
+
+  return codepoints;
+}
+
+/**
+ * SASLprep.
+ * @param {string} input
+ * @param {Object} opts
+ * @param {boolean} opts.allowUnassigned
+ * @returns {string}
+ */
+function saslprep(input, opts = {}) {
+  if (typeof input !== 'string') {
+    throw new TypeError('Expected string.');
+  }
+
+  if (input.length === 0) {
+    return '';
+  }
+
+  // 1. Map
+  const mapped_input = toCodePoints(input)
+    // 1.1 mapping to space
+    .map(character => (mapping2space.get(character) ? 0x20 : character))
+    // 1.2 mapping to nothing
+    .filter(character => !mapping2nothing.get(character));
+
+  // 2. Normalize
+  const normalized_input = String.fromCodePoint
+    .apply(null, mapped_input)
+    .normalize('NFKC');
+
+  const normalized_map = toCodePoints(normalized_input);
+
+  // 3. Prohibit
+  const hasProhibited = normalized_map.some(character =>
+    prohibited_characters.get(character)
+  );
+
+  if (hasProhibited) {
+    throw new Error(
+      'Prohibited character, see https://tools.ietf.org/html/rfc4013#section-2.3'
+    );
+  }
+
+  // Unassigned Code Points
+  if (opts.allowUnassigned !== true) {
+    const hasUnassigned = normalized_map.some(character =>
+      unassigned_code_points.get(character)
+    );
+
+    if (hasUnassigned) {
+      throw new Error(
+        'Unassigned code point, see https://tools.ietf.org/html/rfc4013#section-2.5'
+      );
+    }
+  }
+
+  // 4. check bidi
+
+  const hasBidiRAL = normalized_map.some(character =>
+    bidirectional_r_al.get(character)
+  );
+
+  const hasBidiL = normalized_map.some(character =>
+    bidirectional_l.get(character)
+  );
+
+  // 4.1 If a string contains any RandALCat character, the string MUST NOT
+  // contain any LCat character.
+  if (hasBidiRAL && hasBidiL) {
+    throw new Error(
+      'String must not contain RandALCat and LCat at the same time,' +
+        ' see https://tools.ietf.org/html/rfc3454#section-6'
+    );
+  }
+
+  /**
+   * 4.2 If a string contains any RandALCat character, a RandALCat
+   * character MUST be the first character of the string, and a
+   * RandALCat character MUST be the last character of the string.
+   */
+
+  const isFirstBidiRAL = bidirectional_r_al.get(
+    getCodePoint(first(normalized_input))
+  );
+  const isLastBidiRAL = bidirectional_r_al.get(
+    getCodePoint(last(normalized_input))
+  );
+
+  if (hasBidiRAL && !(isFirstBidiRAL && isLastBidiRAL)) {
+    throw new Error(
+      'Bidirectional RandALCat character must be the first and the last' +
+        ' character of the string, see https://tools.ietf.org/html/rfc3454#section-6'
+    );
+  }
+
+  return normalized_input;
+}
diff --git a/node_modules/saslprep/lib/code-points.js b/node_modules/saslprep/lib/code-points.js
new file mode 100644
index 0000000..222182c
--- /dev/null
+++ b/node_modules/saslprep/lib/code-points.js
@@ -0,0 +1,996 @@
+'use strict';
+
+const { range } = require('./util');
+
+/**
+ * A.1 Unassigned code points in Unicode 3.2
+ * @link https://tools.ietf.org/html/rfc3454#appendix-A.1
+ */
+const unassigned_code_points = new Set([
+  0x0221,
+  ...range(0x0234, 0x024f),
+  ...range(0x02ae, 0x02af),
+  ...range(0x02ef, 0x02ff),
+  ...range(0x0350, 0x035f),
+  ...range(0x0370, 0x0373),
+  ...range(0x0376, 0x0379),
+  ...range(0x037b, 0x037d),
+  ...range(0x037f, 0x0383),
+  0x038b,
+  0x038d,
+  0x03a2,
+  0x03cf,
+  ...range(0x03f7, 0x03ff),
+  0x0487,
+  0x04cf,
+  ...range(0x04f6, 0x04f7),
+  ...range(0x04fa, 0x04ff),
+  ...range(0x0510, 0x0530),
+  ...range(0x0557, 0x0558),
+  0x0560,
+  0x0588,
+  ...range(0x058b, 0x0590),
+  0x05a2,
+  0x05ba,
+  ...range(0x05c5, 0x05cf),
+  ...range(0x05eb, 0x05ef),
+  ...range(0x05f5, 0x060b),
+  ...range(0x060d, 0x061a),
+  ...range(0x061c, 0x061e),
+  0x0620,
+  ...range(0x063b, 0x063f),
+  ...range(0x0656, 0x065f),
+  ...range(0x06ee, 0x06ef),
+  0x06ff,
+  0x070e,
+  ...range(0x072d, 0x072f),
+  ...range(0x074b, 0x077f),
+  ...range(0x07b2, 0x0900),
+  0x0904,
+  ...range(0x093a, 0x093b),
+  ...range(0x094e, 0x094f),
+  ...range(0x0955, 0x0957),
+  ...range(0x0971, 0x0980),
+  0x0984,
+  ...range(0x098d, 0x098e),
+  ...range(0x0991, 0x0992),
+  0x09a9,
+  0x09b1,
+  ...range(0x09b3, 0x09b5),
+  ...range(0x09ba, 0x09bb),
+  0x09bd,
+  ...range(0x09c5, 0x09c6),
+  ...range(0x09c9, 0x09ca),
+  ...range(0x09ce, 0x09d6),
+  ...range(0x09d8, 0x09db),
+  0x09de,
+  ...range(0x09e4, 0x09e5),
+  ...range(0x09fb, 0x0a01),
+  ...range(0x0a03, 0x0a04),
+  ...range(0x0a0b, 0x0a0e),
+  ...range(0x0a11, 0x0a12),
+  0x0a29,
+  0x0a31,
+  0x0a34,
+  0x0a37,
+  ...range(0x0a3a, 0x0a3b),
+  0x0a3d,
+  ...range(0x0a43, 0x0a46),
+  ...range(0x0a49, 0x0a4a),
+  ...range(0x0a4e, 0x0a58),
+  0x0a5d,
+  ...range(0x0a5f, 0x0a65),
+  ...range(0x0a75, 0x0a80),
+  0x0a84,
+  0x0a8c,
+  0x0a8e,
+  0x0a92,
+  0x0aa9,
+  0x0ab1,
+  0x0ab4,
+  ...range(0x0aba, 0x0abb),
+  0x0ac6,
+  0x0aca,
+  ...range(0x0ace, 0x0acf),
+  ...range(0x0ad1, 0x0adf),
+  ...range(0x0ae1, 0x0ae5),
+  ...range(0x0af0, 0x0b00),
+  0x0b04,
+  ...range(0x0b0d, 0x0b0e),
+  ...range(0x0b11, 0x0b12),
+  0x0b29,
+  0x0b31,
+  ...range(0x0b34, 0x0b35),
+  ...range(0x0b3a, 0x0b3b),
+  ...range(0x0b44, 0x0b46),
+  ...range(0x0b49, 0x0b4a),
+  ...range(0x0b4e, 0x0b55),
+  ...range(0x0b58, 0x0b5b),
+  0x0b5e,
+  ...range(0x0b62, 0x0b65),
+  ...range(0x0b71, 0x0b81),
+  0x0b84,
+  ...range(0x0b8b, 0x0b8d),
+  0x0b91,
+  ...range(0x0b96, 0x0b98),
+  0x0b9b,
+  0x0b9d,
+  ...range(0x0ba0, 0x0ba2),
+  ...range(0x0ba5, 0x0ba7),
+  ...range(0x0bab, 0x0bad),
+  0x0bb6,
+  ...range(0x0bba, 0x0bbd),
+  ...range(0x0bc3, 0x0bc5),
+  0x0bc9,
+  ...range(0x0bce, 0x0bd6),
+  ...range(0x0bd8, 0x0be6),
+  ...range(0x0bf3, 0x0c00),
+  0x0c04,
+  0x0c0d,
+  0x0c11,
+  0x0c29,
+  0x0c34,
+  ...range(0x0c3a, 0x0c3d),
+  0x0c45,
+  0x0c49,
+  ...range(0x0c4e, 0x0c54),
+  ...range(0x0c57, 0x0c5f),
+  ...range(0x0c62, 0x0c65),
+  ...range(0x0c70, 0x0c81),
+  0x0c84,
+  0x0c8d,
+  0x0c91,
+  0x0ca9,
+  0x0cb4,
+  ...range(0x0cba, 0x0cbd),
+  0x0cc5,
+  0x0cc9,
+  ...range(0x0cce, 0x0cd4),
+  ...range(0x0cd7, 0x0cdd),
+  0x0cdf,
+  ...range(0x0ce2, 0x0ce5),
+  ...range(0x0cf0, 0x0d01),
+  0x0d04,
+  0x0d0d,
+  0x0d11,
+  0x0d29,
+  ...range(0x0d3a, 0x0d3d),
+  ...range(0x0d44, 0x0d45),
+  0x0d49,
+  ...range(0x0d4e, 0x0d56),
+  ...range(0x0d58, 0x0d5f),
+  ...range(0x0d62, 0x0d65),
+  ...range(0x0d70, 0x0d81),
+  0x0d84,
+  ...range(0x0d97, 0x0d99),
+  0x0db2,
+  0x0dbc,
+  ...range(0x0dbe, 0x0dbf),
+  ...range(0x0dc7, 0x0dc9),
+  ...range(0x0dcb, 0x0dce),
+  0x0dd5,
+  0x0dd7,
+  ...range(0x0de0, 0x0df1),
+  ...range(0x0df5, 0x0e00),
+  ...range(0x0e3b, 0x0e3e),
+  ...range(0x0e5c, 0x0e80),
+  0x0e83,
+  ...range(0x0e85, 0x0e86),
+  0x0e89,
+  ...range(0x0e8b, 0x0e8c),
+  ...range(0x0e8e, 0x0e93),
+  0x0e98,
+  0x0ea0,
+  0x0ea4,
+  0x0ea6,
+  ...range(0x0ea8, 0x0ea9),
+  0x0eac,
+  0x0eba,
+  ...range(0x0ebe, 0x0ebf),
+  0x0ec5,
+  0x0ec7,
+  ...range(0x0ece, 0x0ecf),
+  ...range(0x0eda, 0x0edb),
+  ...range(0x0ede, 0x0eff),
+  0x0f48,
+  ...range(0x0f6b, 0x0f70),
+  ...range(0x0f8c, 0x0f8f),
+  0x0f98,
+  0x0fbd,
+  ...range(0x0fcd, 0x0fce),
+  ...range(0x0fd0, 0x0fff),
+  0x1022,
+  0x1028,
+  0x102b,
+  ...range(0x1033, 0x1035),
+  ...range(0x103a, 0x103f),
+  ...range(0x105a, 0x109f),
+  ...range(0x10c6, 0x10cf),
+  ...range(0x10f9, 0x10fa),
+  ...range(0x10fc, 0x10ff),
+  ...range(0x115a, 0x115e),
+  ...range(0x11a3, 0x11a7),
+  ...range(0x11fa, 0x11ff),
+  0x1207,
+  0x1247,
+  0x1249,
+  ...range(0x124e, 0x124f),
+  0x1257,
+  0x1259,
+  ...range(0x125e, 0x125f),
+  0x1287,
+  0x1289,
+  ...range(0x128e, 0x128f),
+  0x12af,
+  0x12b1,
+  ...range(0x12b6, 0x12b7),
+  0x12bf,
+  0x12c1,
+  ...range(0x12c6, 0x12c7),
+  0x12cf,
+  0x12d7,
+  0x12ef,
+  0x130f,
+  0x1311,
+  ...range(0x1316, 0x1317),
+  0x131f,
+  0x1347,
+  ...range(0x135b, 0x1360),
+  ...range(0x137d, 0x139f),
+  ...range(0x13f5, 0x1400),
+  ...range(0x1677, 0x167f),
+  ...range(0x169d, 0x169f),
+  ...range(0x16f1, 0x16ff),
+  0x170d,
+  ...range(0x1715, 0x171f),
+  ...range(0x1737, 0x173f),
+  ...range(0x1754, 0x175f),
+  0x176d,
+  0x1771,
+  ...range(0x1774, 0x177f),
+  ...range(0x17dd, 0x17df),
+  ...range(0x17ea, 0x17ff),
+  0x180f,
+  ...range(0x181a, 0x181f),
+  ...range(0x1878, 0x187f),
+  ...range(0x18aa, 0x1dff),
+  ...range(0x1e9c, 0x1e9f),
+  ...range(0x1efa, 0x1eff),
+  ...range(0x1f16, 0x1f17),
+  ...range(0x1f1e, 0x1f1f),
+  ...range(0x1f46, 0x1f47),
+  ...range(0x1f4e, 0x1f4f),
+  0x1f58,
+  0x1f5a,
+  0x1f5c,
+  0x1f5e,
+  ...range(0x1f7e, 0x1f7f),
+  0x1fb5,
+  0x1fc5,
+  ...range(0x1fd4, 0x1fd5),
+  0x1fdc,
+  ...range(0x1ff0, 0x1ff1),
+  0x1ff5,
+  0x1fff,
+  ...range(0x2053, 0x2056),
+  ...range(0x2058, 0x205e),
+  ...range(0x2064, 0x2069),
+  ...range(0x2072, 0x2073),
+  ...range(0x208f, 0x209f),
+  ...range(0x20b2, 0x20cf),
+  ...range(0x20eb, 0x20ff),
+  ...range(0x213b, 0x213c),
+  ...range(0x214c, 0x2152),
+  ...range(0x2184, 0x218f),
+  ...range(0x23cf, 0x23ff),
+  ...range(0x2427, 0x243f),
+  ...range(0x244b, 0x245f),
+  0x24ff,
+  ...range(0x2614, 0x2615),
+  0x2618,
+  ...range(0x267e, 0x267f),
+  ...range(0x268a, 0x2700),
+  0x2705,
+  ...range(0x270a, 0x270b),
+  0x2728,
+  0x274c,
+  0x274e,
+  ...range(0x2753, 0x2755),
+  0x2757,
+  ...range(0x275f, 0x2760),
+  ...range(0x2795, 0x2797),
+  0x27b0,
+  ...range(0x27bf, 0x27cf),
+  ...range(0x27ec, 0x27ef),
+  ...range(0x2b00, 0x2e7f),
+  0x2e9a,
+  ...range(0x2ef4, 0x2eff),
+  ...range(0x2fd6, 0x2fef),
+  ...range(0x2ffc, 0x2fff),
+  0x3040,
+  ...range(0x3097, 0x3098),
+  ...range(0x3100, 0x3104),
+  ...range(0x312d, 0x3130),
+  0x318f,
+  ...range(0x31b8, 0x31ef),
+  ...range(0x321d, 0x321f),
+  ...range(0x3244, 0x3250),
+  ...range(0x327c, 0x327e),
+  ...range(0x32cc, 0x32cf),
+  0x32ff,
+  ...range(0x3377, 0x337a),
+  ...range(0x33de, 0x33df),
+  0x33ff,
+  ...range(0x4db6, 0x4dff),
+  ...range(0x9fa6, 0x9fff),
+  ...range(0xa48d, 0xa48f),
+  ...range(0xa4c7, 0xabff),
+  ...range(0xd7a4, 0xd7ff),
+  ...range(0xfa2e, 0xfa2f),
+  ...range(0xfa6b, 0xfaff),
+  ...range(0xfb07, 0xfb12),
+  ...range(0xfb18, 0xfb1c),
+  0xfb37,
+  0xfb3d,
+  0xfb3f,
+  0xfb42,
+  0xfb45,
+  ...range(0xfbb2, 0xfbd2),
+  ...range(0xfd40, 0xfd4f),
+  ...range(0xfd90, 0xfd91),
+  ...range(0xfdc8, 0xfdcf),
+  ...range(0xfdfd, 0xfdff),
+  ...range(0xfe10, 0xfe1f),
+  ...range(0xfe24, 0xfe2f),
+  ...range(0xfe47, 0xfe48),
+  0xfe53,
+  0xfe67,
+  ...range(0xfe6c, 0xfe6f),
+  0xfe75,
+  ...range(0xfefd, 0xfefe),
+  0xff00,
+  ...range(0xffbf, 0xffc1),
+  ...range(0xffc8, 0xffc9),
+  ...range(0xffd0, 0xffd1),
+  ...range(0xffd8, 0xffd9),
+  ...range(0xffdd, 0xffdf),
+  0xffe7,
+  ...range(0xffef, 0xfff8),
+  ...range(0x10000, 0x102ff),
+  0x1031f,
+  ...range(0x10324, 0x1032f),
+  ...range(0x1034b, 0x103ff),
+  ...range(0x10426, 0x10427),
+  ...range(0x1044e, 0x1cfff),
+  ...range(0x1d0f6, 0x1d0ff),
+  ...range(0x1d127, 0x1d129),
+  ...range(0x1d1de, 0x1d3ff),
+  0x1d455,
+  0x1d49d,
+  ...range(0x1d4a0, 0x1d4a1),
+  ...range(0x1d4a3, 0x1d4a4),
+  ...range(0x1d4a7, 0x1d4a8),
+  0x1d4ad,
+  0x1d4ba,
+  0x1d4bc,
+  0x1d4c1,
+  0x1d4c4,
+  0x1d506,
+  ...range(0x1d50b, 0x1d50c),
+  0x1d515,
+  0x1d51d,
+  0x1d53a,
+  0x1d53f,
+  0x1d545,
+  ...range(0x1d547, 0x1d549),
+  0x1d551,
+  ...range(0x1d6a4, 0x1d6a7),
+  ...range(0x1d7ca, 0x1d7cd),
+  ...range(0x1d800, 0x1fffd),
+  ...range(0x2a6d7, 0x2f7ff),
+  ...range(0x2fa1e, 0x2fffd),
+  ...range(0x30000, 0x3fffd),
+  ...range(0x40000, 0x4fffd),
+  ...range(0x50000, 0x5fffd),
+  ...range(0x60000, 0x6fffd),
+  ...range(0x70000, 0x7fffd),
+  ...range(0x80000, 0x8fffd),
+  ...range(0x90000, 0x9fffd),
+  ...range(0xa0000, 0xafffd),
+  ...range(0xb0000, 0xbfffd),
+  ...range(0xc0000, 0xcfffd),
+  ...range(0xd0000, 0xdfffd),
+  0xe0000,
+  ...range(0xe0002, 0xe001f),
+  ...range(0xe0080, 0xefffd),
+]);
+
+/**
+ * B.1 Commonly mapped to nothing
+ * @link https://tools.ietf.org/html/rfc3454#appendix-B.1
+ */
+const commonly_mapped_to_nothing = new Set([
+  0x00ad,
+  0x034f,
+  0x1806,
+  0x180b,
+  0x180c,
+  0x180d,
+  0x200b,
+  0x200c,
+  0x200d,
+  0x2060,
+  0xfe00,
+  0xfe01,
+  0xfe02,
+  0xfe03,
+  0xfe04,
+  0xfe05,
+  0xfe06,
+  0xfe07,
+  0xfe08,
+  0xfe09,
+  0xfe0a,
+  0xfe0b,
+  0xfe0c,
+  0xfe0d,
+  0xfe0e,
+  0xfe0f,
+  0xfeff,
+]);
+
+/**
+ * C.1.2 Non-ASCII space characters
+ * @link https://tools.ietf.org/html/rfc3454#appendix-C.1.2
+ */
+const non_ASCII_space_characters = new Set([
+  0x00a0 /* NO-BREAK SPACE */,
+  0x1680 /* OGHAM SPACE MARK */,
+  0x2000 /* EN QUAD */,
+  0x2001 /* EM QUAD */,
+  0x2002 /* EN SPACE */,
+  0x2003 /* EM SPACE */,
+  0x2004 /* THREE-PER-EM SPACE */,
+  0x2005 /* FOUR-PER-EM SPACE */,
+  0x2006 /* SIX-PER-EM SPACE */,
+  0x2007 /* FIGURE SPACE */,
+  0x2008 /* PUNCTUATION SPACE */,
+  0x2009 /* THIN SPACE */,
+  0x200a /* HAIR SPACE */,
+  0x200b /* ZERO WIDTH SPACE */,
+  0x202f /* NARROW NO-BREAK SPACE */,
+  0x205f /* MEDIUM MATHEMATICAL SPACE */,
+  0x3000 /* IDEOGRAPHIC SPACE */,
+]);
+
+/**
+ * 2.3.  Prohibited Output
+ * @type {Set}
+ */
+const prohibited_characters = new Set([
+  ...non_ASCII_space_characters,
+
+  /**
+   * C.2.1 ASCII control characters
+   * @link https://tools.ietf.org/html/rfc3454#appendix-C.2.1
+   */
+  ...range(0, 0x001f) /* [CONTROL CHARACTERS] */,
+  0x007f /* DELETE */,
+
+  /**
+   * C.2.2 Non-ASCII control characters
+   * @link https://tools.ietf.org/html/rfc3454#appendix-C.2.2
+   */
+  ...range(0x0080, 0x009f) /* [CONTROL CHARACTERS] */,
+  0x06dd /* ARABIC END OF AYAH */,
+  0x070f /* SYRIAC ABBREVIATION MARK */,
+  0x180e /* MONGOLIAN VOWEL SEPARATOR */,
+  0x200c /* ZERO WIDTH NON-JOINER */,
+  0x200d /* ZERO WIDTH JOINER */,
+  0x2028 /* LINE SEPARATOR */,
+  0x2029 /* PARAGRAPH SEPARATOR */,
+  0x2060 /* WORD JOINER */,
+  0x2061 /* FUNCTION APPLICATION */,
+  0x2062 /* INVISIBLE TIMES */,
+  0x2063 /* INVISIBLE SEPARATOR */,
+  ...range(0x206a, 0x206f) /* [CONTROL CHARACTERS] */,
+  0xfeff /* ZERO WIDTH NO-BREAK SPACE */,
+  ...range(0xfff9, 0xfffc) /* [CONTROL CHARACTERS] */,
+  ...range(0x1d173, 0x1d17a) /* [MUSICAL CONTROL CHARACTERS] */,
+
+  /**
+   * C.3 Private use
+   * @link https://tools.ietf.org/html/rfc3454#appendix-C.3
+   */
+  ...range(0xe000, 0xf8ff) /* [PRIVATE USE, PLANE 0] */,
+  ...range(0xf0000, 0xffffd) /* [PRIVATE USE, PLANE 15] */,
+  ...range(0x100000, 0x10fffd) /* [PRIVATE USE, PLANE 16] */,
+
+  /**
+   * C.4 Non-character code points
+   * @link https://tools.ietf.org/html/rfc3454#appendix-C.4
+   */
+  ...range(0xfdd0, 0xfdef) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0xfffe, 0xffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x1fffe, 0x1ffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x2fffe, 0x2ffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x3fffe, 0x3ffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x4fffe, 0x4ffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x5fffe, 0x5ffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x6fffe, 0x6ffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x7fffe, 0x7ffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x8fffe, 0x8ffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x9fffe, 0x9ffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0xafffe, 0xaffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0xbfffe, 0xbffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0xcfffe, 0xcffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0xdfffe, 0xdffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0xefffe, 0xeffff) /* [NONCHARACTER CODE POINTS] */,
+  ...range(0x10fffe, 0x10ffff) /* [NONCHARACTER CODE POINTS] */,
+
+  /**
+   * C.5 Surrogate codes
+   * @link https://tools.ietf.org/html/rfc3454#appendix-C.5
+   */
+  ...range(0xd800, 0xdfff),
+
+  /**
+   * C.6 Inappropriate for plain text
+   * @link https://tools.ietf.org/html/rfc3454#appendix-C.6
+   */
+  0xfff9 /* INTERLINEAR ANNOTATION ANCHOR */,
+  0xfffa /* INTERLINEAR ANNOTATION SEPARATOR */,
+  0xfffb /* INTERLINEAR ANNOTATION TERMINATOR */,
+  0xfffc /* OBJECT REPLACEMENT CHARACTER */,
+  0xfffd /* REPLACEMENT CHARACTER */,
+
+  /**
+   * C.7 Inappropriate for canonical representation
+   * @link https://tools.ietf.org/html/rfc3454#appendix-C.7
+   */
+  ...range(0x2ff0, 0x2ffb) /* [IDEOGRAPHIC DESCRIPTION CHARACTERS] */,
+
+  /**
+   * C.8 Change display properties or are deprecated
+   * @link https://tools.ietf.org/html/rfc3454#appendix-C.8
+   */
+  0x0340 /* COMBINING GRAVE TONE MARK */,
+  0x0341 /* COMBINING ACUTE TONE MARK */,
+  0x200e /* LEFT-TO-RIGHT MARK */,
+  0x200f /* RIGHT-TO-LEFT MARK */,
+  0x202a /* LEFT-TO-RIGHT EMBEDDING */,
+  0x202b /* RIGHT-TO-LEFT EMBEDDING */,
+  0x202c /* POP DIRECTIONAL FORMATTING */,
+  0x202d /* LEFT-TO-RIGHT OVERRIDE */,
+  0x202e /* RIGHT-TO-LEFT OVERRIDE */,
+  0x206a /* INHIBIT SYMMETRIC SWAPPING */,
+  0x206b /* ACTIVATE SYMMETRIC SWAPPING */,
+  0x206c /* INHIBIT ARABIC FORM SHAPING */,
+  0x206d /* ACTIVATE ARABIC FORM SHAPING */,
+  0x206e /* NATIONAL DIGIT SHAPES */,
+  0x206f /* NOMINAL DIGIT SHAPES */,
+
+  /**
+   * C.9 Tagging characters
+   * @link https://tools.ietf.org/html/rfc3454#appendix-C.9
+   */
+  0xe0001 /* LANGUAGE TAG */,
+  ...range(0xe0020, 0xe007f) /* [TAGGING CHARACTERS] */,
+]);
+
+/**
+ * D.1 Characters with bidirectional property "R" or "AL"
+ * @link https://tools.ietf.org/html/rfc3454#appendix-D.1
+ */
+const bidirectional_r_al = new Set([
+  0x05be,
+  0x05c0,
+  0x05c3,
+  ...range(0x05d0, 0x05ea),
+  ...range(0x05f0, 0x05f4),
+  0x061b,
+  0x061f,
+  ...range(0x0621, 0x063a),
+  ...range(0x0640, 0x064a),
+  ...range(0x066d, 0x066f),
+  ...range(0x0671, 0x06d5),
+  0x06dd,
+  ...range(0x06e5, 0x06e6),
+  ...range(0x06fa, 0x06fe),
+  ...range(0x0700, 0x070d),
+  0x0710,
+  ...range(0x0712, 0x072c),
+  ...range(0x0780, 0x07a5),
+  0x07b1,
+  0x200f,
+  0xfb1d,
+  ...range(0xfb1f, 0xfb28),
+  ...range(0xfb2a, 0xfb36),
+  ...range(0xfb38, 0xfb3c),
+  0xfb3e,
+  ...range(0xfb40, 0xfb41),
+  ...range(0xfb43, 0xfb44),
+  ...range(0xfb46, 0xfbb1),
+  ...range(0xfbd3, 0xfd3d),
+  ...range(0xfd50, 0xfd8f),
+  ...range(0xfd92, 0xfdc7),
+  ...range(0xfdf0, 0xfdfc),
+  ...range(0xfe70, 0xfe74),
+  ...range(0xfe76, 0xfefc),
+]);
+
+/**
+ * D.2 Characters with bidirectional property "L"
+ * @link https://tools.ietf.org/html/rfc3454#appendix-D.2
+ */
+const bidirectional_l = new Set([
+  ...range(0x0041, 0x005a),
+  ...range(0x0061, 0x007a),
+  0x00aa,
+  0x00b5,
+  0x00ba,
+  ...range(0x00c0, 0x00d6),
+  ...range(0x00d8, 0x00f6),
+  ...range(0x00f8, 0x0220),
+  ...range(0x0222, 0x0233),
+  ...range(0x0250, 0x02ad),
+  ...range(0x02b0, 0x02b8),
+  ...range(0x02bb, 0x02c1),
+  ...range(0x02d0, 0x02d1),
+  ...range(0x02e0, 0x02e4),
+  0x02ee,
+  0x037a,
+  0x0386,
+  ...range(0x0388, 0x038a),
+  0x038c,
+  ...range(0x038e, 0x03a1),
+  ...range(0x03a3, 0x03ce),
+  ...range(0x03d0, 0x03f5),
+  ...range(0x0400, 0x0482),
+  ...range(0x048a, 0x04ce),
+  ...range(0x04d0, 0x04f5),
+  ...range(0x04f8, 0x04f9),
+  ...range(0x0500, 0x050f),
+  ...range(0x0531, 0x0556),
+  ...range(0x0559, 0x055f),
+  ...range(0x0561, 0x0587),
+  0x0589,
+  0x0903,
+  ...range(0x0905, 0x0939),
+  ...range(0x093d, 0x0940),
+  ...range(0x0949, 0x094c),
+  0x0950,
+  ...range(0x0958, 0x0961),
+  ...range(0x0964, 0x0970),
+  ...range(0x0982, 0x0983),
+  ...range(0x0985, 0x098c),
+  ...range(0x098f, 0x0990),
+  ...range(0x0993, 0x09a8),
+  ...range(0x09aa, 0x09b0),
+  0x09b2,
+  ...range(0x09b6, 0x09b9),
+  ...range(0x09be, 0x09c0),
+  ...range(0x09c7, 0x09c8),
+  ...range(0x09cb, 0x09cc),
+  0x09d7,
+  ...range(0x09dc, 0x09dd),
+  ...range(0x09df, 0x09e1),
+  ...range(0x09e6, 0x09f1),
+  ...range(0x09f4, 0x09fa),
+  ...range(0x0a05, 0x0a0a),
+  ...range(0x0a0f, 0x0a10),
+  ...range(0x0a13, 0x0a28),
+  ...range(0x0a2a, 0x0a30),
+  ...range(0x0a32, 0x0a33),
+  ...range(0x0a35, 0x0a36),
+  ...range(0x0a38, 0x0a39),
+  ...range(0x0a3e, 0x0a40),
+  ...range(0x0a59, 0x0a5c),
+  0x0a5e,
+  ...range(0x0a66, 0x0a6f),
+  ...range(0x0a72, 0x0a74),
+  0x0a83,
+  ...range(0x0a85, 0x0a8b),
+  0x0a8d,
+  ...range(0x0a8f, 0x0a91),
+  ...range(0x0a93, 0x0aa8),
+  ...range(0x0aaa, 0x0ab0),
+  ...range(0x0ab2, 0x0ab3),
+  ...range(0x0ab5, 0x0ab9),
+  ...range(0x0abd, 0x0ac0),
+  0x0ac9,
+  ...range(0x0acb, 0x0acc),
+  0x0ad0,
+  0x0ae0,
+  ...range(0x0ae6, 0x0aef),
+  ...range(0x0b02, 0x0b03),
+  ...range(0x0b05, 0x0b0c),
+  ...range(0x0b0f, 0x0b10),
+  ...range(0x0b13, 0x0b28),
+  ...range(0x0b2a, 0x0b30),
+  ...range(0x0b32, 0x0b33),
+  ...range(0x0b36, 0x0b39),
+  ...range(0x0b3d, 0x0b3e),
+  0x0b40,
+  ...range(0x0b47, 0x0b48),
+  ...range(0x0b4b, 0x0b4c),
+  0x0b57,
+  ...range(0x0b5c, 0x0b5d),
+  ...range(0x0b5f, 0x0b61),
+  ...range(0x0b66, 0x0b70),
+  0x0b83,
+  ...range(0x0b85, 0x0b8a),
+  ...range(0x0b8e, 0x0b90),
+  ...range(0x0b92, 0x0b95),
+  ...range(0x0b99, 0x0b9a),
+  0x0b9c,
+  ...range(0x0b9e, 0x0b9f),
+  ...range(0x0ba3, 0x0ba4),
+  ...range(0x0ba8, 0x0baa),
+  ...range(0x0bae, 0x0bb5),
+  ...range(0x0bb7, 0x0bb9),
+  ...range(0x0bbe, 0x0bbf),
+  ...range(0x0bc1, 0x0bc2),
+  ...range(0x0bc6, 0x0bc8),
+  ...range(0x0bca, 0x0bcc),
+  0x0bd7,
+  ...range(0x0be7, 0x0bf2),
+  ...range(0x0c01, 0x0c03),
+  ...range(0x0c05, 0x0c0c),
+  ...range(0x0c0e, 0x0c10),
+  ...range(0x0c12, 0x0c28),
+  ...range(0x0c2a, 0x0c33),
+  ...range(0x0c35, 0x0c39),
+  ...range(0x0c41, 0x0c44),
+  ...range(0x0c60, 0x0c61),
+  ...range(0x0c66, 0x0c6f),
+  ...range(0x0c82, 0x0c83),
+  ...range(0x0c85, 0x0c8c),
+  ...range(0x0c8e, 0x0c90),
+  ...range(0x0c92, 0x0ca8),
+  ...range(0x0caa, 0x0cb3),
+  ...range(0x0cb5, 0x0cb9),
+  0x0cbe,
+  ...range(0x0cc0, 0x0cc4),
+  ...range(0x0cc7, 0x0cc8),
+  ...range(0x0cca, 0x0ccb),
+  ...range(0x0cd5, 0x0cd6),
+  0x0cde,
+  ...range(0x0ce0, 0x0ce1),
+  ...range(0x0ce6, 0x0cef),
+  ...range(0x0d02, 0x0d03),
+  ...range(0x0d05, 0x0d0c),
+  ...range(0x0d0e, 0x0d10),
+  ...range(0x0d12, 0x0d28),
+  ...range(0x0d2a, 0x0d39),
+  ...range(0x0d3e, 0x0d40),
+  ...range(0x0d46, 0x0d48),
+  ...range(0x0d4a, 0x0d4c),
+  0x0d57,
+  ...range(0x0d60, 0x0d61),
+  ...range(0x0d66, 0x0d6f),
+  ...range(0x0d82, 0x0d83),
+  ...range(0x0d85, 0x0d96),
+  ...range(0x0d9a, 0x0db1),
+  ...range(0x0db3, 0x0dbb),
+  0x0dbd,
+  ...range(0x0dc0, 0x0dc6),
+  ...range(0x0dcf, 0x0dd1),
+  ...range(0x0dd8, 0x0ddf),
+  ...range(0x0df2, 0x0df4),
+  ...range(0x0e01, 0x0e30),
+  ...range(0x0e32, 0x0e33),
+  ...range(0x0e40, 0x0e46),
+  ...range(0x0e4f, 0x0e5b),
+  ...range(0x0e81, 0x0e82),
+  0x0e84,
+  ...range(0x0e87, 0x0e88),
+  0x0e8a,
+  0x0e8d,
+  ...range(0x0e94, 0x0e97),
+  ...range(0x0e99, 0x0e9f),
+  ...range(0x0ea1, 0x0ea3),
+  0x0ea5,
+  0x0ea7,
+  ...range(0x0eaa, 0x0eab),
+  ...range(0x0ead, 0x0eb0),
+  ...range(0x0eb2, 0x0eb3),
+  0x0ebd,
+  ...range(0x0ec0, 0x0ec4),
+  0x0ec6,
+  ...range(0x0ed0, 0x0ed9),
+  ...range(0x0edc, 0x0edd),
+  ...range(0x0f00, 0x0f17),
+  ...range(0x0f1a, 0x0f34),
+  0x0f36,
+  0x0f38,
+  ...range(0x0f3e, 0x0f47),
+  ...range(0x0f49, 0x0f6a),
+  0x0f7f,
+  0x0f85,
+  ...range(0x0f88, 0x0f8b),
+  ...range(0x0fbe, 0x0fc5),
+  ...range(0x0fc7, 0x0fcc),
+  0x0fcf,
+  ...range(0x1000, 0x1021),
+  ...range(0x1023, 0x1027),
+  ...range(0x1029, 0x102a),
+  0x102c,
+  0x1031,
+  0x1038,
+  ...range(0x1040, 0x1057),
+  ...range(0x10a0, 0x10c5),
+  ...range(0x10d0, 0x10f8),
+  0x10fb,
+  ...range(0x1100, 0x1159),
+  ...range(0x115f, 0x11a2),
+  ...range(0x11a8, 0x11f9),
+  ...range(0x1200, 0x1206),
+  ...range(0x1208, 0x1246),
+  0x1248,
+  ...range(0x124a, 0x124d),
+  ...range(0x1250, 0x1256),
+  0x1258,
+  ...range(0x125a, 0x125d),
+  ...range(0x1260, 0x1286),
+  0x1288,
+  ...range(0x128a, 0x128d),
+  ...range(0x1290, 0x12ae),
+  0x12b0,
+  ...range(0x12b2, 0x12b5),
+  ...range(0x12b8, 0x12be),
+  0x12c0,
+  ...range(0x12c2, 0x12c5),
+  ...range(0x12c8, 0x12ce),
+  ...range(0x12d0, 0x12d6),
+  ...range(0x12d8, 0x12ee),
+  ...range(0x12f0, 0x130e),
+  0x1310,
+  ...range(0x1312, 0x1315),
+  ...range(0x1318, 0x131e),
+  ...range(0x1320, 0x1346),
+  ...range(0x1348, 0x135a),
+  ...range(0x1361, 0x137c),
+  ...range(0x13a0, 0x13f4),
+  ...range(0x1401, 0x1676),
+  ...range(0x1681, 0x169a),
+  ...range(0x16a0, 0x16f0),
+  ...range(0x1700, 0x170c),
+  ...range(0x170e, 0x1711),
+  ...range(0x1720, 0x1731),
+  ...range(0x1735, 0x1736),
+  ...range(0x1740, 0x1751),
+  ...range(0x1760, 0x176c),
+  ...range(0x176e, 0x1770),
+  ...range(0x1780, 0x17b6),
+  ...range(0x17be, 0x17c5),
+  ...range(0x17c7, 0x17c8),
+  ...range(0x17d4, 0x17da),
+  0x17dc,
+  ...range(0x17e0, 0x17e9),
+  ...range(0x1810, 0x1819),
+  ...range(0x1820, 0x1877),
+  ...range(0x1880, 0x18a8),
+  ...range(0x1e00, 0x1e9b),
+  ...range(0x1ea0, 0x1ef9),
+  ...range(0x1f00, 0x1f15),
+  ...range(0x1f18, 0x1f1d),
+  ...range(0x1f20, 0x1f45),
+  ...range(0x1f48, 0x1f4d),
+  ...range(0x1f50, 0x1f57),
+  0x1f59,
+  0x1f5b,
+  0x1f5d,
+  ...range(0x1f5f, 0x1f7d),
+  ...range(0x1f80, 0x1fb4),
+  ...range(0x1fb6, 0x1fbc),
+  0x1fbe,
+  ...range(0x1fc2, 0x1fc4),
+  ...range(0x1fc6, 0x1fcc),
+  ...range(0x1fd0, 0x1fd3),
+  ...range(0x1fd6, 0x1fdb),
+  ...range(0x1fe0, 0x1fec),
+  ...range(0x1ff2, 0x1ff4),
+  ...range(0x1ff6, 0x1ffc),
+  0x200e,
+  0x2071,
+  0x207f,
+  0x2102,
+  0x2107,
+  ...range(0x210a, 0x2113),
+  0x2115,
+  ...range(0x2119, 0x211d),
+  0x2124,
+  0x2126,
+  0x2128,
+  ...range(0x212a, 0x212d),
+  ...range(0x212f, 0x2131),
+  ...range(0x2133, 0x2139),
+  ...range(0x213d, 0x213f),
+  ...range(0x2145, 0x2149),
+  ...range(0x2160, 0x2183),
+  ...range(0x2336, 0x237a),
+  0x2395,
+  ...range(0x249c, 0x24e9),
+  ...range(0x3005, 0x3007),
+  ...range(0x3021, 0x3029),
+  ...range(0x3031, 0x3035),
+  ...range(0x3038, 0x303c),
+  ...range(0x3041, 0x3096),
+  ...range(0x309d, 0x309f),
+  ...range(0x30a1, 0x30fa),
+  ...range(0x30fc, 0x30ff),
+  ...range(0x3105, 0x312c),
+  ...range(0x3131, 0x318e),
+  ...range(0x3190, 0x31b7),
+  ...range(0x31f0, 0x321c),
+  ...range(0x3220, 0x3243),
+  ...range(0x3260, 0x327b),
+  ...range(0x327f, 0x32b0),
+  ...range(0x32c0, 0x32cb),
+  ...range(0x32d0, 0x32fe),
+  ...range(0x3300, 0x3376),
+  ...range(0x337b, 0x33dd),
+  ...range(0x33e0, 0x33fe),
+  ...range(0x3400, 0x4db5),
+  ...range(0x4e00, 0x9fa5),
+  ...range(0xa000, 0xa48c),
+  ...range(0xac00, 0xd7a3),
+  ...range(0xd800, 0xfa2d),
+  ...range(0xfa30, 0xfa6a),
+  ...range(0xfb00, 0xfb06),
+  ...range(0xfb13, 0xfb17),
+  ...range(0xff21, 0xff3a),
+  ...range(0xff41, 0xff5a),
+  ...range(0xff66, 0xffbe),
+  ...range(0xffc2, 0xffc7),
+  ...range(0xffca, 0xffcf),
+  ...range(0xffd2, 0xffd7),
+  ...range(0xffda, 0xffdc),
+  ...range(0x10300, 0x1031e),
+  ...range(0x10320, 0x10323),
+  ...range(0x10330, 0x1034a),
+  ...range(0x10400, 0x10425),
+  ...range(0x10428, 0x1044d),
+  ...range(0x1d000, 0x1d0f5),
+  ...range(0x1d100, 0x1d126),
+  ...range(0x1d12a, 0x1d166),
+  ...range(0x1d16a, 0x1d172),
+  ...range(0x1d183, 0x1d184),
+  ...range(0x1d18c, 0x1d1a9),
+  ...range(0x1d1ae, 0x1d1dd),
+  ...range(0x1d400, 0x1d454),
+  ...range(0x1d456, 0x1d49c),
+  ...range(0x1d49e, 0x1d49f),
+  0x1d4a2,
+  ...range(0x1d4a5, 0x1d4a6),
+  ...range(0x1d4a9, 0x1d4ac),
+  ...range(0x1d4ae, 0x1d4b9),
+  0x1d4bb,
+  ...range(0x1d4bd, 0x1d4c0),
+  ...range(0x1d4c2, 0x1d4c3),
+  ...range(0x1d4c5, 0x1d505),
+  ...range(0x1d507, 0x1d50a),
+  ...range(0x1d50d, 0x1d514),
+  ...range(0x1d516, 0x1d51c),
+  ...range(0x1d51e, 0x1d539),
+  ...range(0x1d53b, 0x1d53e),
+  ...range(0x1d540, 0x1d544),
+  0x1d546,
+  ...range(0x1d54a, 0x1d550),
+  ...range(0x1d552, 0x1d6a3),
+  ...range(0x1d6a8, 0x1d7c9),
+  ...range(0x20000, 0x2a6d6),
+  ...range(0x2f800, 0x2fa1d),
+  ...range(0xf0000, 0xffffd),
+  ...range(0x100000, 0x10fffd),
+]);
+
+module.exports = {
+  unassigned_code_points,
+  commonly_mapped_to_nothing,
+  non_ASCII_space_characters,
+  prohibited_characters,
+  bidirectional_r_al,
+  bidirectional_l,
+};
diff --git a/node_modules/saslprep/lib/memory-code-points.js b/node_modules/saslprep/lib/memory-code-points.js
new file mode 100644
index 0000000..cb0289c
--- /dev/null
+++ b/node_modules/saslprep/lib/memory-code-points.js
@@ -0,0 +1,39 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const bitfield = require('sparse-bitfield');
+
+/* eslint-disable-next-line security/detect-non-literal-fs-filename */
+const memory = fs.readFileSync(path.resolve(__dirname, '../code-points.mem'));
+let offset = 0;
+
+/**
+ * Loads each code points sequence from buffer.
+ * @returns {bitfield}
+ */
+function read() {
+  const size = memory.readUInt32BE(offset);
+  offset += 4;
+
+  const codepoints = memory.slice(offset, offset + size);
+  offset += size;
+
+  return bitfield({ buffer: codepoints });
+}
+
+const unassigned_code_points = read();
+const commonly_mapped_to_nothing = read();
+const non_ASCII_space_characters = read();
+const prohibited_characters = read();
+const bidirectional_r_al = read();
+const bidirectional_l = read();
+
+module.exports = {
+  unassigned_code_points,
+  commonly_mapped_to_nothing,
+  non_ASCII_space_characters,
+  prohibited_characters,
+  bidirectional_r_al,
+  bidirectional_l,
+};
diff --git a/node_modules/saslprep/lib/util.js b/node_modules/saslprep/lib/util.js
new file mode 100644
index 0000000..506bdc9
--- /dev/null
+++ b/node_modules/saslprep/lib/util.js
@@ -0,0 +1,21 @@
+'use strict';
+
+/**
+ * Create an array of numbers.
+ * @param {number} from
+ * @param {number} to
+ * @returns {number[]}
+ */
+function range(from, to) {
+  // TODO: make this inlined.
+  const list = new Array(to - from + 1);
+
+  for (let i = 0; i < list.length; i += 1) {
+    list[i] = from + i;
+  }
+  return list;
+}
+
+module.exports = {
+  range,
+};
diff --git a/node_modules/saslprep/package.json b/node_modules/saslprep/package.json
new file mode 100644
index 0000000..e15da96
--- /dev/null
+++ b/node_modules/saslprep/package.json
@@ -0,0 +1,100 @@
+{
+  "_from": "saslprep@^1.0.0",
+  "_id": "saslprep@1.0.3",
+  "_inBundle": false,
+  "_integrity": "sha512-/MY/PEMbk2SuY5sScONwhUDsV2p77Znkb/q3nSVstq/yQzYJOH/Azh29p9oJLsl3LnQwSvZDKagDGBsBwSooag==",
+  "_location": "/saslprep",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "saslprep@^1.0.0",
+    "name": "saslprep",
+    "escapedName": "saslprep",
+    "rawSpec": "^1.0.0",
+    "saveSpec": null,
+    "fetchSpec": "^1.0.0"
+  },
+  "_requiredBy": [
+    "/mongodb"
+  ],
+  "_resolved": "https://registry.npmjs.org/saslprep/-/saslprep-1.0.3.tgz",
+  "_shasum": "4c02f946b56cf54297e347ba1093e7acac4cf226",
+  "_spec": "saslprep@^1.0.0",
+  "_where": "/home/pruss/Dev/3-minute-website/node_modules/mongodb",
+  "author": {
+    "name": "Dmitry Tsvettsikh",
+    "email": "me@reklatsmasters.com"
+  },
+  "bugs": {
+    "url": "https://github.com/reklatsmasters/saslprep/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "sparse-bitfield": "^3.0.3"
+  },
+  "deprecated": false,
+  "description": "SASLprep: Stringprep Profile for User Names and Passwords, rfc4013.",
+  "devDependencies": {
+    "@nodertc/eslint-config": "^0.2.1",
+    "eslint": "^5.16.0",
+    "jest": "^23.6.0",
+    "prettier": "^1.14.3"
+  },
+  "engines": {
+    "node": ">=6"
+  },
+  "eslintConfig": {
+    "extends": "@nodertc",
+    "rules": {
+      "camelcase": "off",
+      "no-continue": "off"
+    },
+    "overrides": [
+      {
+        "files": [
+          "test/*.js"
+        ],
+        "env": {
+          "jest": true
+        },
+        "rules": {
+          "require-jsdoc": "off"
+        }
+      }
+    ]
+  },
+  "homepage": "https://github.com/reklatsmasters/saslprep#readme",
+  "jest": {
+    "modulePaths": [
+      "<rootDir>"
+    ],
+    "testMatch": [
+      "**/test/*.js"
+    ],
+    "testPathIgnorePatterns": [
+      "<rootDir>/node_modules/"
+    ]
+  },
+  "keywords": [
+    "sasl",
+    "saslprep",
+    "stringprep",
+    "rfc4013",
+    "4013"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "saslprep",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/reklatsmasters/saslprep.git"
+  },
+  "scripts": {
+    "gen-code-points": "node generate-code-points.js > code-points.mem",
+    "lint": "npx eslint --quiet .",
+    "test": "npm run lint && npm run unit-test",
+    "unit-test": "npx jest"
+  },
+  "version": "1.0.3"
+}
diff --git a/node_modules/saslprep/readme.md b/node_modules/saslprep/readme.md
new file mode 100644
index 0000000..8ff3d70
--- /dev/null
+++ b/node_modules/saslprep/readme.md
@@ -0,0 +1,31 @@
+# saslprep
+[![Build Status](https://travis-ci.org/reklatsmasters/saslprep.svg?branch=master)](https://travis-ci.org/reklatsmasters/saslprep)
+[![npm](https://img.shields.io/npm/v/saslprep.svg)](https://npmjs.org/package/saslprep)
+[![node](https://img.shields.io/node/v/saslprep.svg)](https://npmjs.org/package/saslprep)
+[![license](https://img.shields.io/npm/l/saslprep.svg)](https://npmjs.org/package/saslprep)
+[![downloads](https://img.shields.io/npm/dm/saslprep.svg)](https://npmjs.org/package/saslprep)
+
+Stringprep Profile for User Names and Passwords, [rfc4013](https://tools.ietf.org/html/rfc4013)
+
+### Usage
+
+```js
+const saslprep = require('saslprep')
+
+saslprep('password\u00AD') // password
+saslprep('password\u0007') // Error: prohibited character
+```
+
+### API
+
+##### `saslprep(input: String, opts: Options): String`
+
+Normalize user name or password.
+
+##### `Options.allowUnassigned: bool`
+
+A special behavior for unassigned code points, see https://tools.ietf.org/html/rfc4013#section-2.5. Disabled by default.
+
+## License
+
+MIT, 2017-2019 (c) Dmitriy Tsvettsikh
diff --git a/node_modules/saslprep/test/index.js b/node_modules/saslprep/test/index.js
new file mode 100644
index 0000000..80c71af
--- /dev/null
+++ b/node_modules/saslprep/test/index.js
@@ -0,0 +1,76 @@
+'use strict';
+
+const saslprep = require('..');
+
+const chr = String.fromCodePoint;
+
+test('should work with liatin letters', () => {
+  const str = 'user';
+  expect(saslprep(str)).toEqual(str);
+});
+
+test('should work be case preserved', () => {
+  const str = 'USER';
+  expect(saslprep(str)).toEqual(str);
+});
+
+test('should work with high code points (> U+FFFF)', () => {
+  const str = '\uD83D\uDE00';
+  expect(saslprep(str, { allowUnassigned: true })).toEqual(str);
+});
+
+test('should remove `mapped to nothing` characters', () => {
+  expect(saslprep('I\u00ADX')).toEqual('IX');
+});
+
+test('should replace `Non-ASCII space characters` with space', () => {
+  expect(saslprep('a\u00A0b')).toEqual('a\u0020b');
+});
+
+test('should normalize as NFKC', () => {
+  expect(saslprep('\u00AA')).toEqual('a');
+  expect(saslprep('\u2168')).toEqual('IX');
+});
+
+test('should throws when prohibited characters', () => {
+  // C.2.1 ASCII control characters
+  expect(() => saslprep('a\u007Fb')).toThrow();
+
+  // C.2.2 Non-ASCII control characters
+  expect(() => saslprep('a\u06DDb')).toThrow();
+
+  // C.3 Private use
+  expect(() => saslprep('a\uE000b')).toThrow();
+
+  // C.4 Non-character code points
+  expect(() => saslprep(`a${chr(0x1fffe)}b`)).toThrow();
+
+  // C.5 Surrogate codes
+  expect(() => saslprep('a\uD800b')).toThrow();
+
+  // C.6 Inappropriate for plain text
+  expect(() => saslprep('a\uFFF9b')).toThrow();
+
+  // C.7 Inappropriate for canonical representation
+  expect(() => saslprep('a\u2FF0b')).toThrow();
+
+  // C.8 Change display properties or are deprecated
+  expect(() => saslprep('a\u200Eb')).toThrow();
+
+  // C.9 Tagging characters
+  expect(() => saslprep(`a${chr(0xe0001)}b`)).toThrow();
+});
+
+test('should not containt RandALCat and LCat bidi', () => {
+  expect(() => saslprep('a\u06DD\u00AAb')).toThrow();
+});
+
+test('RandALCat should be first and last', () => {
+  expect(() => saslprep('\u0627\u0031\u0628')).not.toThrow();
+  expect(() => saslprep('\u0627\u0031')).toThrow();
+});
+
+test('should handle unassigned code points', () => {
+  expect(() => saslprep('a\u0487')).toThrow();
+  expect(() => saslprep('a\u0487', { allowUnassigned: true })).not.toThrow();
+});
diff --git a/node_modules/saslprep/test/util.js b/node_modules/saslprep/test/util.js
new file mode 100644
index 0000000..355db3f
--- /dev/null
+++ b/node_modules/saslprep/test/util.js
@@ -0,0 +1,16 @@
+'use strict';
+
+const { setFlagsFromString } = require('v8');
+const { range } = require('../lib/util');
+
+// 984 by default.
+setFlagsFromString('--stack_size=500');
+
+test('should work', () => {
+  const list = range(1, 3);
+  expect(list).toEqual([1, 2, 3]);
+});
+
+test('should work for large ranges', () => {
+  expect(() => range(1, 1e6)).not.toThrow();
+});