Add tests for \p{…} with properties of strings

This functionality is part of the RegExp `v` flag proposal: https://github.com/tc39/proposal-regexp-set-notation

features.txt

@@ -264,6 +264,10 @@ array-find-from-last
 # https://github.com/tc39/proposal-intl-duration-format
 Intl.DurationFormat
 
+# RegExp set notation + properties of strings
+# https://github.com/tc39/proposal-regexp-set-notation
+regexp-v-flag
+
 ## Standard language features
 #
 # Language features that have been included in a published version of the

harness/regExpUtils.js

@@ -3,7 +3,7 @@
 /*---
 description: |
     Collection of functions used to assert the correctness of RegExp objects.
-defines: [buildString, testPropertyEscapes, matchValidator]
+defines: [buildString, testPropertyEscapes, testPropertyOfStrings, matchValidator]
 ---*/
 
 function buildString(args) {
@@ -31,23 +31,65 @@ function buildString(args) {
   return result;
 }
 
-function testPropertyEscapes(regex, string, expression) {
+function printCodePoint(codePoint) {
-  if (!regex.test(string)) {
+  const hex = codePoint
+    .toString(16)
+    .toUpperCase()
+    .padStart(6, "0");
+  return `U+${hex}`;
+}
+
+function printStringCodePoints(string) {
+  const buf = [];
+  for (const symbol of string) {
+    const formatted = printCodePoint(symbol.codePointAt(0));
+    buf.push(formatted);
+  }
+  return buf.join(' ');
+}
+
+function testPropertyEscapes(regExp, string, expression) {
+  if (!regExp.test(string)) {
     for (const symbol of string) {
-      const hex = symbol
+      printCodePoint(symbol.codePointAt(0));
-        .codePointAt(0)
-        .toString(16)
-        .toUpperCase()
-        .padStart(6, "0");
       assert(
-        regex.test(symbol),
+        regExp.test(symbol),
         `\`${ expression }\` should match U+${ hex } (\`${ symbol }\`)`
       );
     }
   }
 }
 
-// Returns a function that will validate RegExp match result
+function testPropertyOfStrings(args) {
+  // Use member expressions rather than destructuring `args` for improved
+  // compatibility with engines that only implement assignment patterns
+  // partially or not at all.
+  const regExp = args.regExp;
+  const expression = args.expression;
+  const matchStrings = args.matchStrings;
+  const nonMatchStrings = args.nonMatchStrings;
+  const allStrings = matchStrings.join('');
+  if (!regExp.test(allStrings)) {
+    for (const string of matchStrings) {
+      assert(
+        regExp.test(string),
+        `\`${ expression }\` should match ${ string } (U+${ printStringCodePoints(string) })`
+      );
+    }
+  }
+
+  const allNonMatchStrings = nonMatchStrings.join('');
+  if (regExp.test(allNonMatchStrings)) {
+    for (const string of nonMatchStrings) {
+      assert(
+        !regExp.test(string),
+        `\`${ expression }\` should not match ${ string } (U+${ printStringCodePoints(string) })`
+      );
+    }
+  }
+}
+
+// Returns a function that validates a RegExp match result.
 //
 // Example:
 //

test/built-ins/RegExp/property-escapes/generated/strings/Basic_Emoji-negative-CharacterClass.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `Basic_Emoji` (property of strings) with `[^\p{…}]` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/[^\p{Basic_Emoji}]/v;

test/built-ins/RegExp/property-escapes/generated/strings/Basic_Emoji-negative-P.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `Basic_Emoji` (property of strings) with `\P{…}` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\P{Basic_Emoji}/v;

test/built-ins/RegExp/property-escapes/generated/strings/Basic_Emoji-negative-u.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `Basic_Emoji` (property of strings) with the `u` flag throws an early error. Properties of strings are only supported through the `v` flag.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\p{Basic_Emoji}/u;

test/built-ins/RegExp/property-escapes/generated/strings/Emoji_Keycap_Sequence-negative-CharacterClass.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `Emoji_Keycap_Sequence` (property of strings) with `[^\p{…}]` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/[^\p{Emoji_Keycap_Sequence}]/v;

test/built-ins/RegExp/property-escapes/generated/strings/Emoji_Keycap_Sequence-negative-P.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `Emoji_Keycap_Sequence` (property of strings) with `\P{…}` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\P{Emoji_Keycap_Sequence}/v;

test/built-ins/RegExp/property-escapes/generated/strings/Emoji_Keycap_Sequence-negative-u.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `Emoji_Keycap_Sequence` (property of strings) with the `u` flag throws an early error. Properties of strings are only supported through the `v` flag.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\p{Emoji_Keycap_Sequence}/u;

test/built-ins/RegExp/property-escapes/generated/strings/Emoji_Keycap_Sequence.js

@@ -0,0 +1,50 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `Emoji_Keycap_Sequence` (property of strings)
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-static-semantics-unicodematchproperty-p
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+includes: [regExpUtils.js]
+---*/
+
+testPropertyOfStrings({
+  regExp: /^\p{Emoji_Keycap_Sequence}+$/v,
+  expression: "\\p{Emoji_Keycap_Sequence}",
+  matchStrings: [
+    "#\uFE0F\u20E3",
+    "*\uFE0F\u20E3",
+    "0\uFE0F\u20E3",
+    "1\uFE0F\u20E3",
+    "2\uFE0F\u20E3",
+    "3\uFE0F\u20E3",
+    "4\uFE0F\u20E3",
+    "5\uFE0F\u20E3",
+    "6\uFE0F\u20E3",
+    "7\uFE0F\u20E3",
+    "8\uFE0F\u20E3",
+    "9\uFE0F\u20E3"
+  ],
+  nonMatchStrings: [
+    "\uFE0F\u20E3",
+    "#\uFE0F",
+    "#\u20E3",
+    "\uFE0F\u20E3",
+    "*\uFE0F",
+    "*\u20E3",
+    "\uFE0F\u20E3",
+    "0\uFE0F",
+    "0\u20E3",
+    "\uFE0F\u20E3",
+    "1\uFE0F",
+    "1\u20E3",
+    "\uFE0F\u20E3",
+    "2\uFE0F",
+    "2\u20E3"
+  ],
+});

test/built-ins/RegExp/property-escapes/generated/strings/Emoji_Test-negative-CharacterClass.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `Emoji_Test` (property of strings) with `[^\p{…}]` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/[^\p{Emoji_Test}]/v;

test/built-ins/RegExp/property-escapes/generated/strings/Emoji_Test-negative-P.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `Emoji_Test` (property of strings) with `\P{…}` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\P{Emoji_Test}/v;

test/built-ins/RegExp/property-escapes/generated/strings/Emoji_Test-negative-u.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `Emoji_Test` (property of strings) with the `u` flag throws an early error. Properties of strings are only supported through the `v` flag.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\p{Emoji_Test}/u;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji-negative-CharacterClass.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji` (property of strings) with `[^\p{…}]` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/[^\p{RGI_Emoji}]/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji-negative-P.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji` (property of strings) with `\P{…}` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\P{RGI_Emoji}/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji-negative-u.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `RGI_Emoji` (property of strings) with the `u` flag throws an early error. Properties of strings are only supported through the `v` flag.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\p{RGI_Emoji}/u;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Flag_Sequence-negative-CharacterClass.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji_Flag_Sequence` (property of strings) with `[^\p{…}]` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/[^\p{RGI_Emoji_Flag_Sequence}]/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Flag_Sequence-negative-P.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji_Flag_Sequence` (property of strings) with `\P{…}` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\P{RGI_Emoji_Flag_Sequence}/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Flag_Sequence-negative-u.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `RGI_Emoji_Flag_Sequence` (property of strings) with the `u` flag throws an early error. Properties of strings are only supported through the `v` flag.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\p{RGI_Emoji_Flag_Sequence}/u;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Flag_Sequence.js

@@ -0,0 +1,291 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `RGI_Emoji_Flag_Sequence` (property of strings)
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-static-semantics-unicodematchproperty-p
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+includes: [regExpUtils.js]
+---*/
+
+testPropertyOfStrings({
+  regExp: /^\p{RGI_Emoji_Flag_Sequence}+$/v,
+  expression: "\\p{RGI_Emoji_Flag_Sequence}",
+  matchStrings: [
+    "\u{1F1E6}\u{1F1E8}",
+    "\u{1F1E6}\u{1F1E9}",
+    "\u{1F1E6}\u{1F1EA}",
+    "\u{1F1E6}\u{1F1EB}",
+    "\u{1F1E6}\u{1F1EC}",
+    "\u{1F1E6}\u{1F1EE}",
+    "\u{1F1E6}\u{1F1F1}",
+    "\u{1F1E6}\u{1F1F2}",
+    "\u{1F1E6}\u{1F1F4}",
+    "\u{1F1E6}\u{1F1F6}",
+    "\u{1F1E6}\u{1F1F7}",
+    "\u{1F1E6}\u{1F1F8}",
+    "\u{1F1E6}\u{1F1F9}",
+    "\u{1F1E6}\u{1F1FA}",
+    "\u{1F1E6}\u{1F1FC}",
+    "\u{1F1E6}\u{1F1FD}",
+    "\u{1F1E6}\u{1F1FF}",
+    "\u{1F1E7}\u{1F1E6}",
+    "\u{1F1E7}\u{1F1E7}",
+    "\u{1F1E7}\u{1F1E9}",
+    "\u{1F1E7}\u{1F1EA}",
+    "\u{1F1E7}\u{1F1EB}",
+    "\u{1F1E7}\u{1F1EC}",
+    "\u{1F1E7}\u{1F1ED}",
+    "\u{1F1E7}\u{1F1EE}",
+    "\u{1F1E7}\u{1F1EF}",
+    "\u{1F1E7}\u{1F1F1}",
+    "\u{1F1E7}\u{1F1F2}",
+    "\u{1F1E7}\u{1F1F3}",
+    "\u{1F1E7}\u{1F1F4}",
+    "\u{1F1E7}\u{1F1F6}",
+    "\u{1F1E7}\u{1F1F7}",
+    "\u{1F1E7}\u{1F1F8}",
+    "\u{1F1E7}\u{1F1F9}",
+    "\u{1F1E7}\u{1F1FB}",
+    "\u{1F1E7}\u{1F1FC}",
+    "\u{1F1E7}\u{1F1FE}",
+    "\u{1F1E7}\u{1F1FF}",
+    "\u{1F1E8}\u{1F1E6}",
+    "\u{1F1E8}\u{1F1E8}",
+    "\u{1F1E8}\u{1F1E9}",
+    "\u{1F1E8}\u{1F1EB}",
+    "\u{1F1E8}\u{1F1EC}",
+    "\u{1F1E8}\u{1F1ED}",
+    "\u{1F1E8}\u{1F1EE}",
+    "\u{1F1E8}\u{1F1F0}",
+    "\u{1F1E8}\u{1F1F1}",
+    "\u{1F1E8}\u{1F1F2}",
+    "\u{1F1E8}\u{1F1F3}",
+    "\u{1F1E8}\u{1F1F4}",
+    "\u{1F1E8}\u{1F1F5}",
+    "\u{1F1E8}\u{1F1F7}",
+    "\u{1F1E8}\u{1F1FA}",
+    "\u{1F1E8}\u{1F1FB}",
+    "\u{1F1E8}\u{1F1FC}",
+    "\u{1F1E8}\u{1F1FD}",
+    "\u{1F1E8}\u{1F1FE}",
+    "\u{1F1E8}\u{1F1FF}",
+    "\u{1F1E9}\u{1F1EA}",
+    "\u{1F1E9}\u{1F1EC}",
+    "\u{1F1E9}\u{1F1EF}",
+    "\u{1F1E9}\u{1F1F0}",
+    "\u{1F1E9}\u{1F1F2}",
+    "\u{1F1E9}\u{1F1F4}",
+    "\u{1F1E9}\u{1F1FF}",
+    "\u{1F1EA}\u{1F1E6}",
+    "\u{1F1EA}\u{1F1E8}",
+    "\u{1F1EA}\u{1F1EA}",
+    "\u{1F1EA}\u{1F1EC}",
+    "\u{1F1EA}\u{1F1ED}",
+    "\u{1F1EA}\u{1F1F7}",
+    "\u{1F1EA}\u{1F1F8}",
+    "\u{1F1EA}\u{1F1F9}",
+    "\u{1F1EA}\u{1F1FA}",
+    "\u{1F1EB}\u{1F1EE}",
+    "\u{1F1EB}\u{1F1EF}",
+    "\u{1F1EB}\u{1F1F0}",
+    "\u{1F1EB}\u{1F1F2}",
+    "\u{1F1EB}\u{1F1F4}",
+    "\u{1F1EB}\u{1F1F7}",
+    "\u{1F1EC}\u{1F1E6}",
+    "\u{1F1EC}\u{1F1E7}",
+    "\u{1F1EC}\u{1F1E9}",
+    "\u{1F1EC}\u{1F1EA}",
+    "\u{1F1EC}\u{1F1EB}",
+    "\u{1F1EC}\u{1F1EC}",
+    "\u{1F1EC}\u{1F1ED}",
+    "\u{1F1EC}\u{1F1EE}",
+    "\u{1F1EC}\u{1F1F1}",
+    "\u{1F1EC}\u{1F1F2}",
+    "\u{1F1EC}\u{1F1F3}",
+    "\u{1F1EC}\u{1F1F5}",
+    "\u{1F1EC}\u{1F1F6}",
+    "\u{1F1EC}\u{1F1F7}",
+    "\u{1F1EC}\u{1F1F8}",
+    "\u{1F1EC}\u{1F1F9}",
+    "\u{1F1EC}\u{1F1FA}",
+    "\u{1F1EC}\u{1F1FC}",
+    "\u{1F1EC}\u{1F1FE}",
+    "\u{1F1ED}\u{1F1F0}",
+    "\u{1F1ED}\u{1F1F2}",
+    "\u{1F1ED}\u{1F1F3}",
+    "\u{1F1ED}\u{1F1F7}",
+    "\u{1F1ED}\u{1F1F9}",
+    "\u{1F1ED}\u{1F1FA}",
+    "\u{1F1EE}\u{1F1E8}",
+    "\u{1F1EE}\u{1F1E9}",
+    "\u{1F1EE}\u{1F1EA}",
+    "\u{1F1EE}\u{1F1F1}",
+    "\u{1F1EE}\u{1F1F2}",
+    "\u{1F1EE}\u{1F1F3}",
+    "\u{1F1EE}\u{1F1F4}",
+    "\u{1F1EE}\u{1F1F6}",
+    "\u{1F1EE}\u{1F1F7}",
+    "\u{1F1EE}\u{1F1F8}",
+    "\u{1F1EE}\u{1F1F9}",
+    "\u{1F1EF}\u{1F1EA}",
+    "\u{1F1EF}\u{1F1F2}",
+    "\u{1F1EF}\u{1F1F4}",
+    "\u{1F1EF}\u{1F1F5}",
+    "\u{1F1F0}\u{1F1EA}",
+    "\u{1F1F0}\u{1F1EC}",
+    "\u{1F1F0}\u{1F1ED}",
+    "\u{1F1F0}\u{1F1EE}",
+    "\u{1F1F0}\u{1F1F2}",
+    "\u{1F1F0}\u{1F1F3}",
+    "\u{1F1F0}\u{1F1F5}",
+    "\u{1F1F0}\u{1F1F7}",
+    "\u{1F1F0}\u{1F1FC}",
+    "\u{1F1F0}\u{1F1FE}",
+    "\u{1F1F0}\u{1F1FF}",
+    "\u{1F1F1}\u{1F1E6}",
+    "\u{1F1F1}\u{1F1E7}",
+    "\u{1F1F1}\u{1F1E8}",
+    "\u{1F1F1}\u{1F1EE}",
+    "\u{1F1F1}\u{1F1F0}",
+    "\u{1F1F1}\u{1F1F7}",
+    "\u{1F1F1}\u{1F1F8}",
+    "\u{1F1F1}\u{1F1F9}",
+    "\u{1F1F1}\u{1F1FA}",
+    "\u{1F1F1}\u{1F1FB}",
+    "\u{1F1F1}\u{1F1FE}",
+    "\u{1F1F2}\u{1F1E6}",
+    "\u{1F1F2}\u{1F1E8}",
+    "\u{1F1F2}\u{1F1E9}",
+    "\u{1F1F2}\u{1F1EA}",
+    "\u{1F1F2}\u{1F1EB}",
+    "\u{1F1F2}\u{1F1EC}",
+    "\u{1F1F2}\u{1F1ED}",
+    "\u{1F1F2}\u{1F1F0}",
+    "\u{1F1F2}\u{1F1F1}",
+    "\u{1F1F2}\u{1F1F2}",
+    "\u{1F1F2}\u{1F1F3}",
+    "\u{1F1F2}\u{1F1F4}",
+    "\u{1F1F2}\u{1F1F5}",
+    "\u{1F1F2}\u{1F1F6}",
+    "\u{1F1F2}\u{1F1F7}",
+    "\u{1F1F2}\u{1F1F8}",
+    "\u{1F1F2}\u{1F1F9}",
+    "\u{1F1F2}\u{1F1FA}",
+    "\u{1F1F2}\u{1F1FB}",
+    "\u{1F1F2}\u{1F1FC}",
+    "\u{1F1F2}\u{1F1FD}",
+    "\u{1F1F2}\u{1F1FE}",
+    "\u{1F1F2}\u{1F1FF}",
+    "\u{1F1F3}\u{1F1E6}",
+    "\u{1F1F3}\u{1F1E8}",
+    "\u{1F1F3}\u{1F1EA}",
+    "\u{1F1F3}\u{1F1EB}",
+    "\u{1F1F3}\u{1F1EC}",
+    "\u{1F1F3}\u{1F1EE}",
+    "\u{1F1F3}\u{1F1F1}",
+    "\u{1F1F3}\u{1F1F4}",
+    "\u{1F1F3}\u{1F1F5}",
+    "\u{1F1F3}\u{1F1F7}",
+    "\u{1F1F3}\u{1F1FA}",
+    "\u{1F1F3}\u{1F1FF}",
+    "\u{1F1F4}\u{1F1F2}",
+    "\u{1F1F5}\u{1F1E6}",
+    "\u{1F1F5}\u{1F1EA}",
+    "\u{1F1F5}\u{1F1EB}",
+    "\u{1F1F5}\u{1F1EC}",
+    "\u{1F1F5}\u{1F1ED}",
+    "\u{1F1F5}\u{1F1F0}",
+    "\u{1F1F5}\u{1F1F1}",
+    "\u{1F1F5}\u{1F1F2}",
+    "\u{1F1F5}\u{1F1F3}",
+    "\u{1F1F5}\u{1F1F7}",
+    "\u{1F1F5}\u{1F1F8}",
+    "\u{1F1F5}\u{1F1F9}",
+    "\u{1F1F5}\u{1F1FC}",
+    "\u{1F1F5}\u{1F1FE}",
+    "\u{1F1F6}\u{1F1E6}",
+    "\u{1F1F7}\u{1F1EA}",
+    "\u{1F1F7}\u{1F1F4}",
+    "\u{1F1F7}\u{1F1F8}",
+    "\u{1F1F7}\u{1F1FA}",
+    "\u{1F1F7}\u{1F1FC}",
+    "\u{1F1F8}\u{1F1E6}",
+    "\u{1F1F8}\u{1F1E7}",
+    "\u{1F1F8}\u{1F1E8}",
+    "\u{1F1F8}\u{1F1E9}",
+    "\u{1F1F8}\u{1F1EA}",
+    "\u{1F1F8}\u{1F1EC}",
+    "\u{1F1F8}\u{1F1ED}",
+    "\u{1F1F8}\u{1F1EE}",
+    "\u{1F1F8}\u{1F1EF}",
+    "\u{1F1F8}\u{1F1F0}",
+    "\u{1F1F8}\u{1F1F1}",
+    "\u{1F1F8}\u{1F1F2}",
+    "\u{1F1F8}\u{1F1F3}",
+    "\u{1F1F8}\u{1F1F4}",
+    "\u{1F1F8}\u{1F1F7}",
+    "\u{1F1F8}\u{1F1F8}",
+    "\u{1F1F8}\u{1F1F9}",
+    "\u{1F1F8}\u{1F1FB}",
+    "\u{1F1F8}\u{1F1FD}",
+    "\u{1F1F8}\u{1F1FE}",
+    "\u{1F1F8}\u{1F1FF}",
+    "\u{1F1F9}\u{1F1E6}",
+    "\u{1F1F9}\u{1F1E8}",
+    "\u{1F1F9}\u{1F1E9}",
+    "\u{1F1F9}\u{1F1EB}",
+    "\u{1F1F9}\u{1F1EC}",
+    "\u{1F1F9}\u{1F1ED}",
+    "\u{1F1F9}\u{1F1EF}",
+    "\u{1F1F9}\u{1F1F0}",
+    "\u{1F1F9}\u{1F1F1}",
+    "\u{1F1F9}\u{1F1F2}",
+    "\u{1F1F9}\u{1F1F3}",
+    "\u{1F1F9}\u{1F1F4}",
+    "\u{1F1F9}\u{1F1F7}",
+    "\u{1F1F9}\u{1F1F9}",
+    "\u{1F1F9}\u{1F1FB}",
+    "\u{1F1F9}\u{1F1FC}",
+    "\u{1F1F9}\u{1F1FF}",
+    "\u{1F1FA}\u{1F1E6}",
+    "\u{1F1FA}\u{1F1EC}",
+    "\u{1F1FA}\u{1F1F2}",
+    "\u{1F1FA}\u{1F1F3}",
+    "\u{1F1FA}\u{1F1F8}",
+    "\u{1F1FA}\u{1F1FE}",
+    "\u{1F1FA}\u{1F1FF}",
+    "\u{1F1FB}\u{1F1E6}",
+    "\u{1F1FB}\u{1F1E8}",
+    "\u{1F1FB}\u{1F1EA}",
+    "\u{1F1FB}\u{1F1EC}",
+    "\u{1F1FB}\u{1F1EE}",
+    "\u{1F1FB}\u{1F1F3}",
+    "\u{1F1FB}\u{1F1FA}",
+    "\u{1F1FC}\u{1F1EB}",
+    "\u{1F1FC}\u{1F1F8}",
+    "\u{1F1FD}\u{1F1F0}",
+    "\u{1F1FE}\u{1F1EA}",
+    "\u{1F1FE}\u{1F1F9}",
+    "\u{1F1FF}\u{1F1E6}",
+    "\u{1F1FF}\u{1F1F2}",
+    "\u{1F1FF}\u{1F1FC}"
+  ],
+  nonMatchStrings: [
+    "\u{1F1E8}",
+    "\u{1F1E6}",
+    "\u{1F1E9}",
+    "\u{1F1E6}",
+    "\u{1F1EA}",
+    "\u{1F1E6}",
+    "\u{1F1EB}",
+    "\u{1F1E6}",
+    "\u{1F1EC}",
+    "\u{1F1E6}"
+  ],
+});

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Modifier_Sequence-negative-CharacterClass.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji_Modifier_Sequence` (property of strings) with `[^\p{…}]` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/[^\p{RGI_Emoji_Modifier_Sequence}]/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Modifier_Sequence-negative-P.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji_Modifier_Sequence` (property of strings) with `\P{…}` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\P{RGI_Emoji_Modifier_Sequence}/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Modifier_Sequence-negative-u.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `RGI_Emoji_Modifier_Sequence` (property of strings) with the `u` flag throws an early error. Properties of strings are only supported through the `v` flag.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\p{RGI_Emoji_Modifier_Sequence}/u;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Modifier_Sequence.js

@@ -0,0 +1,678 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `RGI_Emoji_Modifier_Sequence` (property of strings)
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-static-semantics-unicodematchproperty-p
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+includes: [regExpUtils.js]
+---*/
+
+testPropertyOfStrings({
+  regExp: /^\p{RGI_Emoji_Modifier_Sequence}+$/v,
+  expression: "\\p{RGI_Emoji_Modifier_Sequence}",
+  matchStrings: [
+    "\u261D\u{1F3FB}",
+    "\u261D\u{1F3FC}",
+    "\u261D\u{1F3FD}",
+    "\u261D\u{1F3FE}",
+    "\u261D\u{1F3FF}",
+    "\u26F9\u{1F3FB}",
+    "\u26F9\u{1F3FC}",
+    "\u26F9\u{1F3FD}",
+    "\u26F9\u{1F3FE}",
+    "\u26F9\u{1F3FF}",
+    "\u270A\u{1F3FB}",
+    "\u270A\u{1F3FC}",
+    "\u270A\u{1F3FD}",
+    "\u270A\u{1F3FE}",
+    "\u270A\u{1F3FF}",
+    "\u270B\u{1F3FB}",
+    "\u270B\u{1F3FC}",
+    "\u270B\u{1F3FD}",
+    "\u270B\u{1F3FE}",
+    "\u270B\u{1F3FF}",
+    "\u270C\u{1F3FB}",
+    "\u270C\u{1F3FC}",
+    "\u270C\u{1F3FD}",
+    "\u270C\u{1F3FE}",
+    "\u270C\u{1F3FF}",
+    "\u270D\u{1F3FB}",
+    "\u270D\u{1F3FC}",
+    "\u270D\u{1F3FD}",
+    "\u270D\u{1F3FE}",
+    "\u270D\u{1F3FF}",
+    "\u{1F385}\u{1F3FB}",
+    "\u{1F385}\u{1F3FC}",
+    "\u{1F385}\u{1F3FD}",
+    "\u{1F385}\u{1F3FE}",
+    "\u{1F385}\u{1F3FF}",
+    "\u{1F3C2}\u{1F3FB}",
+    "\u{1F3C2}\u{1F3FC}",
+    "\u{1F3C2}\u{1F3FD}",
+    "\u{1F3C2}\u{1F3FE}",
+    "\u{1F3C2}\u{1F3FF}",
+    "\u{1F3C3}\u{1F3FB}",
+    "\u{1F3C3}\u{1F3FC}",
+    "\u{1F3C3}\u{1F3FD}",
+    "\u{1F3C3}\u{1F3FE}",
+    "\u{1F3C3}\u{1F3FF}",
+    "\u{1F3C4}\u{1F3FB}",
+    "\u{1F3C4}\u{1F3FC}",
+    "\u{1F3C4}\u{1F3FD}",
+    "\u{1F3C4}\u{1F3FE}",
+    "\u{1F3C4}\u{1F3FF}",
+    "\u{1F3C7}\u{1F3FB}",
+    "\u{1F3C7}\u{1F3FC}",
+    "\u{1F3C7}\u{1F3FD}",
+    "\u{1F3C7}\u{1F3FE}",
+    "\u{1F3C7}\u{1F3FF}",
+    "\u{1F3CA}\u{1F3FB}",
+    "\u{1F3CA}\u{1F3FC}",
+    "\u{1F3CA}\u{1F3FD}",
+    "\u{1F3CA}\u{1F3FE}",
+    "\u{1F3CA}\u{1F3FF}",
+    "\u{1F3CB}\u{1F3FB}",
+    "\u{1F3CB}\u{1F3FC}",
+    "\u{1F3CB}\u{1F3FD}",
+    "\u{1F3CB}\u{1F3FE}",
+    "\u{1F3CB}\u{1F3FF}",
+    "\u{1F3CC}\u{1F3FB}",
+    "\u{1F3CC}\u{1F3FC}",
+    "\u{1F3CC}\u{1F3FD}",
+    "\u{1F3CC}\u{1F3FE}",
+    "\u{1F3CC}\u{1F3FF}",
+    "\u{1F442}\u{1F3FB}",
+    "\u{1F442}\u{1F3FC}",
+    "\u{1F442}\u{1F3FD}",
+    "\u{1F442}\u{1F3FE}",
+    "\u{1F442}\u{1F3FF}",
+    "\u{1F443}\u{1F3FB}",
+    "\u{1F443}\u{1F3FC}",
+    "\u{1F443}\u{1F3FD}",
+    "\u{1F443}\u{1F3FE}",
+    "\u{1F443}\u{1F3FF}",
+    "\u{1F446}\u{1F3FB}",
+    "\u{1F446}\u{1F3FC}",
+    "\u{1F446}\u{1F3FD}",
+    "\u{1F446}\u{1F3FE}",
+    "\u{1F446}\u{1F3FF}",
+    "\u{1F447}\u{1F3FB}",
+    "\u{1F447}\u{1F3FC}",
+    "\u{1F447}\u{1F3FD}",
+    "\u{1F447}\u{1F3FE}",
+    "\u{1F447}\u{1F3FF}",
+    "\u{1F448}\u{1F3FB}",
+    "\u{1F448}\u{1F3FC}",
+    "\u{1F448}\u{1F3FD}",
+    "\u{1F448}\u{1F3FE}",
+    "\u{1F448}\u{1F3FF}",
+    "\u{1F449}\u{1F3FB}",
+    "\u{1F449}\u{1F3FC}",
+    "\u{1F449}\u{1F3FD}",
+    "\u{1F449}\u{1F3FE}",
+    "\u{1F449}\u{1F3FF}",
+    "\u{1F44A}\u{1F3FB}",
+    "\u{1F44A}\u{1F3FC}",
+    "\u{1F44A}\u{1F3FD}",
+    "\u{1F44A}\u{1F3FE}",
+    "\u{1F44A}\u{1F3FF}",
+    "\u{1F44B}\u{1F3FB}",
+    "\u{1F44B}\u{1F3FC}",
+    "\u{1F44B}\u{1F3FD}",
+    "\u{1F44B}\u{1F3FE}",
+    "\u{1F44B}\u{1F3FF}",
+    "\u{1F44C}\u{1F3FB}",
+    "\u{1F44C}\u{1F3FC}",
+    "\u{1F44C}\u{1F3FD}",
+    "\u{1F44C}\u{1F3FE}",
+    "\u{1F44C}\u{1F3FF}",
+    "\u{1F44D}\u{1F3FB}",
+    "\u{1F44D}\u{1F3FC}",
+    "\u{1F44D}\u{1F3FD}",
+    "\u{1F44D}\u{1F3FE}",
+    "\u{1F44D}\u{1F3FF}",
+    "\u{1F44E}\u{1F3FB}",
+    "\u{1F44E}\u{1F3FC}",
+    "\u{1F44E}\u{1F3FD}",
+    "\u{1F44E}\u{1F3FE}",
+    "\u{1F44E}\u{1F3FF}",
+    "\u{1F44F}\u{1F3FB}",
+    "\u{1F44F}\u{1F3FC}",
+    "\u{1F44F}\u{1F3FD}",
+    "\u{1F44F}\u{1F3FE}",
+    "\u{1F44F}\u{1F3FF}",
+    "\u{1F450}\u{1F3FB}",
+    "\u{1F450}\u{1F3FC}",
+    "\u{1F450}\u{1F3FD}",
+    "\u{1F450}\u{1F3FE}",
+    "\u{1F450}\u{1F3FF}",
+    "\u{1F466}\u{1F3FB}",
+    "\u{1F466}\u{1F3FC}",
+    "\u{1F466}\u{1F3FD}",
+    "\u{1F466}\u{1F3FE}",
+    "\u{1F466}\u{1F3FF}",
+    "\u{1F467}\u{1F3FB}",
+    "\u{1F467}\u{1F3FC}",
+    "\u{1F467}\u{1F3FD}",
+    "\u{1F467}\u{1F3FE}",
+    "\u{1F467}\u{1F3FF}",
+    "\u{1F468}\u{1F3FB}",
+    "\u{1F468}\u{1F3FC}",
+    "\u{1F468}\u{1F3FD}",
+    "\u{1F468}\u{1F3FE}",
+    "\u{1F468}\u{1F3FF}",
+    "\u{1F469}\u{1F3FB}",
+    "\u{1F469}\u{1F3FC}",
+    "\u{1F469}\u{1F3FD}",
+    "\u{1F469}\u{1F3FE}",
+    "\u{1F469}\u{1F3FF}",
+    "\u{1F46B}\u{1F3FB}",
+    "\u{1F46B}\u{1F3FC}",
+    "\u{1F46B}\u{1F3FD}",
+    "\u{1F46B}\u{1F3FE}",
+    "\u{1F46B}\u{1F3FF}",
+    "\u{1F46C}\u{1F3FB}",
+    "\u{1F46C}\u{1F3FC}",
+    "\u{1F46C}\u{1F3FD}",
+    "\u{1F46C}\u{1F3FE}",
+    "\u{1F46C}\u{1F3FF}",
+    "\u{1F46D}\u{1F3FB}",
+    "\u{1F46D}\u{1F3FC}",
+    "\u{1F46D}\u{1F3FD}",
+    "\u{1F46D}\u{1F3FE}",
+    "\u{1F46D}\u{1F3FF}",
+    "\u{1F46E}\u{1F3FB}",
+    "\u{1F46E}\u{1F3FC}",
+    "\u{1F46E}\u{1F3FD}",
+    "\u{1F46E}\u{1F3FE}",
+    "\u{1F46E}\u{1F3FF}",
+    "\u{1F470}\u{1F3FB}",
+    "\u{1F470}\u{1F3FC}",
+    "\u{1F470}\u{1F3FD}",
+    "\u{1F470}\u{1F3FE}",
+    "\u{1F470}\u{1F3FF}",
+    "\u{1F471}\u{1F3FB}",
+    "\u{1F471}\u{1F3FC}",
+    "\u{1F471}\u{1F3FD}",
+    "\u{1F471}\u{1F3FE}",
+    "\u{1F471}\u{1F3FF}",
+    "\u{1F472}\u{1F3FB}",
+    "\u{1F472}\u{1F3FC}",
+    "\u{1F472}\u{1F3FD}",
+    "\u{1F472}\u{1F3FE}",
+    "\u{1F472}\u{1F3FF}",
+    "\u{1F473}\u{1F3FB}",
+    "\u{1F473}\u{1F3FC}",
+    "\u{1F473}\u{1F3FD}",
+    "\u{1F473}\u{1F3FE}",
+    "\u{1F473}\u{1F3FF}",
+    "\u{1F474}\u{1F3FB}",
+    "\u{1F474}\u{1F3FC}",
+    "\u{1F474}\u{1F3FD}",
+    "\u{1F474}\u{1F3FE}",
+    "\u{1F474}\u{1F3FF}",
+    "\u{1F475}\u{1F3FB}",
+    "\u{1F475}\u{1F3FC}",
+    "\u{1F475}\u{1F3FD}",
+    "\u{1F475}\u{1F3FE}",
+    "\u{1F475}\u{1F3FF}",
+    "\u{1F476}\u{1F3FB}",
+    "\u{1F476}\u{1F3FC}",
+    "\u{1F476}\u{1F3FD}",
+    "\u{1F476}\u{1F3FE}",
+    "\u{1F476}\u{1F3FF}",
+    "\u{1F477}\u{1F3FB}",
+    "\u{1F477}\u{1F3FC}",
+    "\u{1F477}\u{1F3FD}",
+    "\u{1F477}\u{1F3FE}",
+    "\u{1F477}\u{1F3FF}",
+    "\u{1F478}\u{1F3FB}",
+    "\u{1F478}\u{1F3FC}",
+    "\u{1F478}\u{1F3FD}",
+    "\u{1F478}\u{1F3FE}",
+    "\u{1F478}\u{1F3FF}",
+    "\u{1F47C}\u{1F3FB}",
+    "\u{1F47C}\u{1F3FC}",
+    "\u{1F47C}\u{1F3FD}",
+    "\u{1F47C}\u{1F3FE}",
+    "\u{1F47C}\u{1F3FF}",
+    "\u{1F481}\u{1F3FB}",
+    "\u{1F481}\u{1F3FC}",
+    "\u{1F481}\u{1F3FD}",
+    "\u{1F481}\u{1F3FE}",
+    "\u{1F481}\u{1F3FF}",
+    "\u{1F482}\u{1F3FB}",
+    "\u{1F482}\u{1F3FC}",
+    "\u{1F482}\u{1F3FD}",
+    "\u{1F482}\u{1F3FE}",
+    "\u{1F482}\u{1F3FF}",
+    "\u{1F483}\u{1F3FB}",
+    "\u{1F483}\u{1F3FC}",
+    "\u{1F483}\u{1F3FD}",
+    "\u{1F483}\u{1F3FE}",
+    "\u{1F483}\u{1F3FF}",
+    "\u{1F485}\u{1F3FB}",
+    "\u{1F485}\u{1F3FC}",
+    "\u{1F485}\u{1F3FD}",
+    "\u{1F485}\u{1F3FE}",
+    "\u{1F485}\u{1F3FF}",
+    "\u{1F486}\u{1F3FB}",
+    "\u{1F486}\u{1F3FC}",
+    "\u{1F486}\u{1F3FD}",
+    "\u{1F486}\u{1F3FE}",
+    "\u{1F486}\u{1F3FF}",
+    "\u{1F487}\u{1F3FB}",
+    "\u{1F487}\u{1F3FC}",
+    "\u{1F487}\u{1F3FD}",
+    "\u{1F487}\u{1F3FE}",
+    "\u{1F487}\u{1F3FF}",
+    "\u{1F48F}\u{1F3FB}",
+    "\u{1F48F}\u{1F3FC}",
+    "\u{1F48F}\u{1F3FD}",
+    "\u{1F48F}\u{1F3FE}",
+    "\u{1F48F}\u{1F3FF}",
+    "\u{1F491}\u{1F3FB}",
+    "\u{1F491}\u{1F3FC}",
+    "\u{1F491}\u{1F3FD}",
+    "\u{1F491}\u{1F3FE}",
+    "\u{1F491}\u{1F3FF}",
+    "\u{1F4AA}\u{1F3FB}",
+    "\u{1F4AA}\u{1F3FC}",
+    "\u{1F4AA}\u{1F3FD}",
+    "\u{1F4AA}\u{1F3FE}",
+    "\u{1F4AA}\u{1F3FF}",
+    "\u{1F574}\u{1F3FB}",
+    "\u{1F574}\u{1F3FC}",
+    "\u{1F574}\u{1F3FD}",
+    "\u{1F574}\u{1F3FE}",
+    "\u{1F574}\u{1F3FF}",
+    "\u{1F575}\u{1F3FB}",
+    "\u{1F575}\u{1F3FC}",
+    "\u{1F575}\u{1F3FD}",
+    "\u{1F575}\u{1F3FE}",
+    "\u{1F575}\u{1F3FF}",
+    "\u{1F57A}\u{1F3FB}",
+    "\u{1F57A}\u{1F3FC}",
+    "\u{1F57A}\u{1F3FD}",
+    "\u{1F57A}\u{1F3FE}",
+    "\u{1F57A}\u{1F3FF}",
+    "\u{1F590}\u{1F3FB}",
+    "\u{1F590}\u{1F3FC}",
+    "\u{1F590}\u{1F3FD}",
+    "\u{1F590}\u{1F3FE}",
+    "\u{1F590}\u{1F3FF}",
+    "\u{1F595}\u{1F3FB}",
+    "\u{1F595}\u{1F3FC}",
+    "\u{1F595}\u{1F3FD}",
+    "\u{1F595}\u{1F3FE}",
+    "\u{1F595}\u{1F3FF}",
+    "\u{1F596}\u{1F3FB}",
+    "\u{1F596}\u{1F3FC}",
+    "\u{1F596}\u{1F3FD}",
+    "\u{1F596}\u{1F3FE}",
+    "\u{1F596}\u{1F3FF}",
+    "\u{1F645}\u{1F3FB}",
+    "\u{1F645}\u{1F3FC}",
+    "\u{1F645}\u{1F3FD}",
+    "\u{1F645}\u{1F3FE}",
+    "\u{1F645}\u{1F3FF}",
+    "\u{1F646}\u{1F3FB}",
+    "\u{1F646}\u{1F3FC}",
+    "\u{1F646}\u{1F3FD}",
+    "\u{1F646}\u{1F3FE}",
+    "\u{1F646}\u{1F3FF}",
+    "\u{1F647}\u{1F3FB}",
+    "\u{1F647}\u{1F3FC}",
+    "\u{1F647}\u{1F3FD}",
+    "\u{1F647}\u{1F3FE}",
+    "\u{1F647}\u{1F3FF}",
+    "\u{1F64B}\u{1F3FB}",
+    "\u{1F64B}\u{1F3FC}",
+    "\u{1F64B}\u{1F3FD}",
+    "\u{1F64B}\u{1F3FE}",
+    "\u{1F64B}\u{1F3FF}",
+    "\u{1F64C}\u{1F3FB}",
+    "\u{1F64C}\u{1F3FC}",
+    "\u{1F64C}\u{1F3FD}",
+    "\u{1F64C}\u{1F3FE}",
+    "\u{1F64C}\u{1F3FF}",
+    "\u{1F64D}\u{1F3FB}",
+    "\u{1F64D}\u{1F3FC}",
+    "\u{1F64D}\u{1F3FD}",
+    "\u{1F64D}\u{1F3FE}",
+    "\u{1F64D}\u{1F3FF}",
+    "\u{1F64E}\u{1F3FB}",
+    "\u{1F64E}\u{1F3FC}",
+    "\u{1F64E}\u{1F3FD}",
+    "\u{1F64E}\u{1F3FE}",
+    "\u{1F64E}\u{1F3FF}",
+    "\u{1F64F}\u{1F3FB}",
+    "\u{1F64F}\u{1F3FC}",
+    "\u{1F64F}\u{1F3FD}",
+    "\u{1F64F}\u{1F3FE}",
+    "\u{1F64F}\u{1F3FF}",
+    "\u{1F6A3}\u{1F3FB}",
+    "\u{1F6A3}\u{1F3FC}",
+    "\u{1F6A3}\u{1F3FD}",
+    "\u{1F6A3}\u{1F3FE}",
+    "\u{1F6A3}\u{1F3FF}",
+    "\u{1F6B4}\u{1F3FB}",
+    "\u{1F6B4}\u{1F3FC}",
+    "\u{1F6B4}\u{1F3FD}",
+    "\u{1F6B4}\u{1F3FE}",
+    "\u{1F6B4}\u{1F3FF}",
+    "\u{1F6B5}\u{1F3FB}",
+    "\u{1F6B5}\u{1F3FC}",
+    "\u{1F6B5}\u{1F3FD}",
+    "\u{1F6B5}\u{1F3FE}",
+    "\u{1F6B5}\u{1F3FF}",
+    "\u{1F6B6}\u{1F3FB}",
+    "\u{1F6B6}\u{1F3FC}",
+    "\u{1F6B6}\u{1F3FD}",
+    "\u{1F6B6}\u{1F3FE}",
+    "\u{1F6B6}\u{1F3FF}",
+    "\u{1F6C0}\u{1F3FB}",
+    "\u{1F6C0}\u{1F3FC}",
+    "\u{1F6C0}\u{1F3FD}",
+    "\u{1F6C0}\u{1F3FE}",
+    "\u{1F6C0}\u{1F3FF}",
+    "\u{1F6CC}\u{1F3FB}",
+    "\u{1F6CC}\u{1F3FC}",
+    "\u{1F6CC}\u{1F3FD}",
+    "\u{1F6CC}\u{1F3FE}",
+    "\u{1F6CC}\u{1F3FF}",
+    "\u{1F90C}\u{1F3FB}",
+    "\u{1F90C}\u{1F3FC}",
+    "\u{1F90C}\u{1F3FD}",
+    "\u{1F90C}\u{1F3FE}",
+    "\u{1F90C}\u{1F3FF}",
+    "\u{1F90F}\u{1F3FB}",
+    "\u{1F90F}\u{1F3FC}",
+    "\u{1F90F}\u{1F3FD}",
+    "\u{1F90F}\u{1F3FE}",
+    "\u{1F90F}\u{1F3FF}",
+    "\u{1F918}\u{1F3FB}",
+    "\u{1F918}\u{1F3FC}",
+    "\u{1F918}\u{1F3FD}",
+    "\u{1F918}\u{1F3FE}",
+    "\u{1F918}\u{1F3FF}",
+    "\u{1F919}\u{1F3FB}",
+    "\u{1F919}\u{1F3FC}",
+    "\u{1F919}\u{1F3FD}",
+    "\u{1F919}\u{1F3FE}",
+    "\u{1F919}\u{1F3FF}",
+    "\u{1F91A}\u{1F3FB}",
+    "\u{1F91A}\u{1F3FC}",
+    "\u{1F91A}\u{1F3FD}",
+    "\u{1F91A}\u{1F3FE}",
+    "\u{1F91A}\u{1F3FF}",
+    "\u{1F91B}\u{1F3FB}",
+    "\u{1F91B}\u{1F3FC}",
+    "\u{1F91B}\u{1F3FD}",
+    "\u{1F91B}\u{1F3FE}",
+    "\u{1F91B}\u{1F3FF}",
+    "\u{1F91C}\u{1F3FB}",
+    "\u{1F91C}\u{1F3FC}",
+    "\u{1F91C}\u{1F3FD}",
+    "\u{1F91C}\u{1F3FE}",
+    "\u{1F91C}\u{1F3FF}",
+    "\u{1F91D}\u{1F3FB}",
+    "\u{1F91D}\u{1F3FC}",
+    "\u{1F91D}\u{1F3FD}",
+    "\u{1F91D}\u{1F3FE}",
+    "\u{1F91D}\u{1F3FF}",
+    "\u{1F91E}\u{1F3FB}",
+    "\u{1F91E}\u{1F3FC}",
+    "\u{1F91E}\u{1F3FD}",
+    "\u{1F91E}\u{1F3FE}",
+    "\u{1F91E}\u{1F3FF}",
+    "\u{1F91F}\u{1F3FB}",
+    "\u{1F91F}\u{1F3FC}",
+    "\u{1F91F}\u{1F3FD}",
+    "\u{1F91F}\u{1F3FE}",
+    "\u{1F91F}\u{1F3FF}",
+    "\u{1F926}\u{1F3FB}",
+    "\u{1F926}\u{1F3FC}",
+    "\u{1F926}\u{1F3FD}",
+    "\u{1F926}\u{1F3FE}",
+    "\u{1F926}\u{1F3FF}",
+    "\u{1F930}\u{1F3FB}",
+    "\u{1F930}\u{1F3FC}",
+    "\u{1F930}\u{1F3FD}",
+    "\u{1F930}\u{1F3FE}",
+    "\u{1F930}\u{1F3FF}",
+    "\u{1F931}\u{1F3FB}",
+    "\u{1F931}\u{1F3FC}",
+    "\u{1F931}\u{1F3FD}",
+    "\u{1F931}\u{1F3FE}",
+    "\u{1F931}\u{1F3FF}",
+    "\u{1F932}\u{1F3FB}",
+    "\u{1F932}\u{1F3FC}",
+    "\u{1F932}\u{1F3FD}",
+    "\u{1F932}\u{1F3FE}",
+    "\u{1F932}\u{1F3FF}",
+    "\u{1F933}\u{1F3FB}",
+    "\u{1F933}\u{1F3FC}",
+    "\u{1F933}\u{1F3FD}",
+    "\u{1F933}\u{1F3FE}",
+    "\u{1F933}\u{1F3FF}",
+    "\u{1F934}\u{1F3FB}",
+    "\u{1F934}\u{1F3FC}",
+    "\u{1F934}\u{1F3FD}",
+    "\u{1F934}\u{1F3FE}",
+    "\u{1F934}\u{1F3FF}",
+    "\u{1F935}\u{1F3FB}",
+    "\u{1F935}\u{1F3FC}",
+    "\u{1F935}\u{1F3FD}",
+    "\u{1F935}\u{1F3FE}",
+    "\u{1F935}\u{1F3FF}",
+    "\u{1F936}\u{1F3FB}",
+    "\u{1F936}\u{1F3FC}",
+    "\u{1F936}\u{1F3FD}",
+    "\u{1F936}\u{1F3FE}",
+    "\u{1F936}\u{1F3FF}",
+    "\u{1F937}\u{1F3FB}",
+    "\u{1F937}\u{1F3FC}",
+    "\u{1F937}\u{1F3FD}",
+    "\u{1F937}\u{1F3FE}",
+    "\u{1F937}\u{1F3FF}",
+    "\u{1F938}\u{1F3FB}",
+    "\u{1F938}\u{1F3FC}",
+    "\u{1F938}\u{1F3FD}",
+    "\u{1F938}\u{1F3FE}",
+    "\u{1F938}\u{1F3FF}",
+    "\u{1F939}\u{1F3FB}",
+    "\u{1F939}\u{1F3FC}",
+    "\u{1F939}\u{1F3FD}",
+    "\u{1F939}\u{1F3FE}",
+    "\u{1F939}\u{1F3FF}",
+    "\u{1F93D}\u{1F3FB}",
+    "\u{1F93D}\u{1F3FC}",
+    "\u{1F93D}\u{1F3FD}",
+    "\u{1F93D}\u{1F3FE}",
+    "\u{1F93D}\u{1F3FF}",
+    "\u{1F93E}\u{1F3FB}",
+    "\u{1F93E}\u{1F3FC}",
+    "\u{1F93E}\u{1F3FD}",
+    "\u{1F93E}\u{1F3FE}",
+    "\u{1F93E}\u{1F3FF}",
+    "\u{1F977}\u{1F3FB}",
+    "\u{1F977}\u{1F3FC}",
+    "\u{1F977}\u{1F3FD}",
+    "\u{1F977}\u{1F3FE}",
+    "\u{1F977}\u{1F3FF}",
+    "\u{1F9B5}\u{1F3FB}",
+    "\u{1F9B5}\u{1F3FC}",
+    "\u{1F9B5}\u{1F3FD}",
+    "\u{1F9B5}\u{1F3FE}",
+    "\u{1F9B5}\u{1F3FF}",
+    "\u{1F9B6}\u{1F3FB}",
+    "\u{1F9B6}\u{1F3FC}",
+    "\u{1F9B6}\u{1F3FD}",
+    "\u{1F9B6}\u{1F3FE}",
+    "\u{1F9B6}\u{1F3FF}",
+    "\u{1F9B8}\u{1F3FB}",
+    "\u{1F9B8}\u{1F3FC}",
+    "\u{1F9B8}\u{1F3FD}",
+    "\u{1F9B8}\u{1F3FE}",
+    "\u{1F9B8}\u{1F3FF}",
+    "\u{1F9B9}\u{1F3FB}",
+    "\u{1F9B9}\u{1F3FC}",
+    "\u{1F9B9}\u{1F3FD}",
+    "\u{1F9B9}\u{1F3FE}",
+    "\u{1F9B9}\u{1F3FF}",
+    "\u{1F9BB}\u{1F3FB}",
+    "\u{1F9BB}\u{1F3FC}",
+    "\u{1F9BB}\u{1F3FD}",
+    "\u{1F9BB}\u{1F3FE}",
+    "\u{1F9BB}\u{1F3FF}",
+    "\u{1F9CD}\u{1F3FB}",
+    "\u{1F9CD}\u{1F3FC}",
+    "\u{1F9CD}\u{1F3FD}",
+    "\u{1F9CD}\u{1F3FE}",
+    "\u{1F9CD}\u{1F3FF}",
+    "\u{1F9CE}\u{1F3FB}",
+    "\u{1F9CE}\u{1F3FC}",
+    "\u{1F9CE}\u{1F3FD}",
+    "\u{1F9CE}\u{1F3FE}",
+    "\u{1F9CE}\u{1F3FF}",
+    "\u{1F9CF}\u{1F3FB}",
+    "\u{1F9CF}\u{1F3FC}",
+    "\u{1F9CF}\u{1F3FD}",
+    "\u{1F9CF}\u{1F3FE}",
+    "\u{1F9CF}\u{1F3FF}",
+    "\u{1F9D1}\u{1F3FB}",
+    "\u{1F9D1}\u{1F3FC}",
+    "\u{1F9D1}\u{1F3FD}",
+    "\u{1F9D1}\u{1F3FE}",
+    "\u{1F9D1}\u{1F3FF}",
+    "\u{1F9D2}\u{1F3FB}",
+    "\u{1F9D2}\u{1F3FC}",
+    "\u{1F9D2}\u{1F3FD}",
+    "\u{1F9D2}\u{1F3FE}",
+    "\u{1F9D2}\u{1F3FF}",
+    "\u{1F9D3}\u{1F3FB}",
+    "\u{1F9D3}\u{1F3FC}",
+    "\u{1F9D3}\u{1F3FD}",
+    "\u{1F9D3}\u{1F3FE}",
+    "\u{1F9D3}\u{1F3FF}",
+    "\u{1F9D4}\u{1F3FB}",
+    "\u{1F9D4}\u{1F3FC}",
+    "\u{1F9D4}\u{1F3FD}",
+    "\u{1F9D4}\u{1F3FE}",
+    "\u{1F9D4}\u{1F3FF}",
+    "\u{1F9D5}\u{1F3FB}",
+    "\u{1F9D5}\u{1F3FC}",
+    "\u{1F9D5}\u{1F3FD}",
+    "\u{1F9D5}\u{1F3FE}",
+    "\u{1F9D5}\u{1F3FF}",
+    "\u{1F9D6}\u{1F3FB}",
+    "\u{1F9D6}\u{1F3FC}",
+    "\u{1F9D6}\u{1F3FD}",
+    "\u{1F9D6}\u{1F3FE}",
+    "\u{1F9D6}\u{1F3FF}",
+    "\u{1F9D7}\u{1F3FB}",
+    "\u{1F9D7}\u{1F3FC}",
+    "\u{1F9D7}\u{1F3FD}",
+    "\u{1F9D7}\u{1F3FE}",
+    "\u{1F9D7}\u{1F3FF}",
+    "\u{1F9D8}\u{1F3FB}",
+    "\u{1F9D8}\u{1F3FC}",
+    "\u{1F9D8}\u{1F3FD}",
+    "\u{1F9D8}\u{1F3FE}",
+    "\u{1F9D8}\u{1F3FF}",
+    "\u{1F9D9}\u{1F3FB}",
+    "\u{1F9D9}\u{1F3FC}",
+    "\u{1F9D9}\u{1F3FD}",
+    "\u{1F9D9}\u{1F3FE}",
+    "\u{1F9D9}\u{1F3FF}",
+    "\u{1F9DA}\u{1F3FB}",
+    "\u{1F9DA}\u{1F3FC}",
+    "\u{1F9DA}\u{1F3FD}",
+    "\u{1F9DA}\u{1F3FE}",
+    "\u{1F9DA}\u{1F3FF}",
+    "\u{1F9DB}\u{1F3FB}",
+    "\u{1F9DB}\u{1F3FC}",
+    "\u{1F9DB}\u{1F3FD}",
+    "\u{1F9DB}\u{1F3FE}",
+    "\u{1F9DB}\u{1F3FF}",
+    "\u{1F9DC}\u{1F3FB}",
+    "\u{1F9DC}\u{1F3FC}",
+    "\u{1F9DC}\u{1F3FD}",
+    "\u{1F9DC}\u{1F3FE}",
+    "\u{1F9DC}\u{1F3FF}",
+    "\u{1F9DD}\u{1F3FB}",
+    "\u{1F9DD}\u{1F3FC}",
+    "\u{1F9DD}\u{1F3FD}",
+    "\u{1F9DD}\u{1F3FE}",
+    "\u{1F9DD}\u{1F3FF}",
+    "\u{1FAC3}\u{1F3FB}",
+    "\u{1FAC3}\u{1F3FC}",
+    "\u{1FAC3}\u{1F3FD}",
+    "\u{1FAC3}\u{1F3FE}",
+    "\u{1FAC3}\u{1F3FF}",
+    "\u{1FAC4}\u{1F3FB}",
+    "\u{1FAC4}\u{1F3FC}",
+    "\u{1FAC4}\u{1F3FD}",
+    "\u{1FAC4}\u{1F3FE}",
+    "\u{1FAC4}\u{1F3FF}",
+    "\u{1FAC5}\u{1F3FB}",
+    "\u{1FAC5}\u{1F3FC}",
+    "\u{1FAC5}\u{1F3FD}",
+    "\u{1FAC5}\u{1F3FE}",
+    "\u{1FAC5}\u{1F3FF}",
+    "\u{1FAF0}\u{1F3FB}",
+    "\u{1FAF0}\u{1F3FC}",
+    "\u{1FAF0}\u{1F3FD}",
+    "\u{1FAF0}\u{1F3FE}",
+    "\u{1FAF0}\u{1F3FF}",
+    "\u{1FAF1}\u{1F3FB}",
+    "\u{1FAF1}\u{1F3FC}",
+    "\u{1FAF1}\u{1F3FD}",
+    "\u{1FAF1}\u{1F3FE}",
+    "\u{1FAF1}\u{1F3FF}",
+    "\u{1FAF2}\u{1F3FB}",
+    "\u{1FAF2}\u{1F3FC}",
+    "\u{1FAF2}\u{1F3FD}",
+    "\u{1FAF2}\u{1F3FE}",
+    "\u{1FAF2}\u{1F3FF}",
+    "\u{1FAF3}\u{1F3FB}",
+    "\u{1FAF3}\u{1F3FC}",
+    "\u{1FAF3}\u{1F3FD}",
+    "\u{1FAF3}\u{1F3FE}",
+    "\u{1FAF3}\u{1F3FF}",
+    "\u{1FAF4}\u{1F3FB}",
+    "\u{1FAF4}\u{1F3FC}",
+    "\u{1FAF4}\u{1F3FD}",
+    "\u{1FAF4}\u{1F3FE}",
+    "\u{1FAF4}\u{1F3FF}",
+    "\u{1FAF5}\u{1F3FB}",
+    "\u{1FAF5}\u{1F3FC}",
+    "\u{1FAF5}\u{1F3FD}",
+    "\u{1FAF5}\u{1F3FE}",
+    "\u{1FAF5}\u{1F3FF}",
+    "\u{1FAF6}\u{1F3FB}",
+    "\u{1FAF6}\u{1F3FC}",
+    "\u{1FAF6}\u{1F3FD}",
+    "\u{1FAF6}\u{1F3FE}",
+    "\u{1FAF6}\u{1F3FF}"
+  ],
+  nonMatchStrings: [
+    "\u{1F3FB}",
+    "\u261D",
+    "\u{1F3FC}",
+    "\u261D",
+    "\u{1F3FD}",
+    "\u261D",
+    "\u{1F3FE}",
+    "\u261D",
+    "\u{1F3FF}",
+    "\u261D"
+  ],
+});

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Tag_Sequence-negative-CharacterClass.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji_Tag_Sequence` (property of strings) with `[^\p{…}]` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/[^\p{RGI_Emoji_Tag_Sequence}]/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Tag_Sequence-negative-P.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji_Tag_Sequence` (property of strings) with `\P{…}` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\P{RGI_Emoji_Tag_Sequence}/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Tag_Sequence-negative-u.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `RGI_Emoji_Tag_Sequence` (property of strings) with the `u` flag throws an early error. Properties of strings are only supported through the `v` flag.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\p{RGI_Emoji_Tag_Sequence}/u;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_Tag_Sequence.js

@@ -0,0 +1,35 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `RGI_Emoji_Tag_Sequence` (property of strings)
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-static-semantics-unicodematchproperty-p
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+includes: [regExpUtils.js]
+---*/
+
+testPropertyOfStrings({
+  regExp: /^\p{RGI_Emoji_Tag_Sequence}+$/v,
+  expression: "\\p{RGI_Emoji_Tag_Sequence}",
+  matchStrings: [
+    "\u{1F3F4}\u{E0067}\u{E0062}\u{E0065}\u{E006E}\u{E0067}\u{E007F}",
+    "\u{1F3F4}\u{E0067}\u{E0062}\u{E0073}\u{E0063}\u{E0074}\u{E007F}",
+    "\u{1F3F4}\u{E0067}\u{E0062}\u{E0077}\u{E006C}\u{E0073}\u{E007F}"
+  ],
+  nonMatchStrings: [
+    "\u{E0067}\u{E0062}\u{E0065}\u{E006E}\u{E0067}\u{E007F}",
+    "\u{1F3F4}\u{E0067}\u{E0062}\u{E0065}\u{E006E}\u{E0067}",
+    "\u{1F3F4}\u{E0062}\u{E0065}\u{E006E}\u{E0067}\u{E007F}",
+    "\u{E0067}\u{E0062}\u{E0073}\u{E0063}\u{E0074}\u{E007F}",
+    "\u{1F3F4}\u{E0067}\u{E0062}\u{E0073}\u{E0063}\u{E0074}",
+    "\u{1F3F4}\u{E0062}\u{E0073}\u{E0063}\u{E0074}\u{E007F}",
+    "\u{E0067}\u{E0062}\u{E0077}\u{E006C}\u{E0073}\u{E007F}",
+    "\u{1F3F4}\u{E0067}\u{E0062}\u{E0077}\u{E006C}\u{E0073}",
+    "\u{1F3F4}\u{E0062}\u{E0077}\u{E006C}\u{E0073}\u{E007F}"
+  ],
+});

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_ZWJ_Sequence-negative-CharacterClass.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji_ZWJ_Sequence` (property of strings) with `[^\p{…}]` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/[^\p{RGI_Emoji_ZWJ_Sequence}]/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_ZWJ_Sequence-negative-P.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Negating Unicode property escapes for `RGI_Emoji_ZWJ_Sequence` (property of strings) with `\P{…}` throws an early error.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-isvalidregularexpressionliteral
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\P{RGI_Emoji_ZWJ_Sequence}/v;

test/built-ins/RegExp/property-escapes/generated/strings/RGI_Emoji_ZWJ_Sequence-negative-u.js

@@ -0,0 +1,20 @@
+// Copyright 2021 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Mathias Bynens
+description: >
+  Unicode property escapes for `RGI_Emoji_ZWJ_Sequence` (property of strings) with the `u` flag throws an early error. Properties of strings are only supported through the `v` flag.
+info: |
+  Generated by https://github.com/mathiasbynens/unicode-property-escapes-tests
+  Unicode v14.0.0
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-unicode-property-escapes, regexp-v-flag]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\p{RGI_Emoji_ZWJ_Sequence}/u;