[v8-test262-automation] Changes from https://github.com/v8/v8.git at sha 766ef168 on Tue Dec 18 2018 19:19:51 GMT+0000 (Coordinated Universal Time)

implementation-contributed/v8/intl/segmenter/segment-grapheme-following.js

@@ -0,0 +1,38 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "grapheme"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let prev = 0;
+  let segments = [];
+  while (!iter.following()) {
+    assertEquals(undefined, iter.breakType);
+    assertTrue(iter.index >= 0);
+    assertTrue(iter.index <= text.length);
+    assertTrue(iter.index > prev);
+    segments.push(text.substring(prev, iter.index));
+    prev = iter.index;
+  }
+  assertEquals(text, segments.join(""));
+}

implementation-contributed/v8/intl/segmenter/segment-grapheme-iterable.js

@@ -0,0 +1,45 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "grapheme"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  let segments = [];
+  // Create another %SegmentIterator% to compare with result from the one that
+  // created in the for of loop.
+  let iter = seg.segment(text);
+  let prev = 0;
+  for (const v of seg.segment(text)) {
+    assertEquals(undefined, v.breakType);
+    assertEquals("string", typeof v.segment);
+    assertTrue(v.segment.length > 0);
+    segments.push(v.segment);
+
+    // manually advance the iter.
+    assertFalse(iter.following());
+    assertEquals(iter.breakType, v.breakType);
+    assertEquals(text.substring(prev, iter.index), v.segment);
+    prev = iter.index;
+  }
+  assertTrue(iter.following());
+  assertEquals(text, segments.join(''));
+}

implementation-contributed/v8/intl/segmenter/segment-grapheme-next.js

@@ -0,0 +1,40 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "grapheme"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let segments = [];
+  let oldPos = -1;
+  for (let result = iter.next(); !result.done; result = iter.next()) {
+    const v = result.value;
+    assertEquals(undefined, v.breakType);
+    assertEquals("string", typeof v.segment);
+    assertTrue(v.segment.length > 0);
+    segments.push(v.segment);
+    assertEquals("number", typeof v.index);
+    assertTrue(oldPos < v.index);
+    oldPos = v.index;
+  }
+  assertEquals(text, segments.join(''));
+}

implementation-contributed/v8/intl/segmenter/segment-grapheme-preceding.js

@@ -0,0 +1,44 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "grapheme"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let prev = text.length;
+  let segments = [];
+  iter.preceding(prev)
+  assertEquals(undefined, iter.breakType)
+  assertTrue(iter.index >= 0);
+  assertTrue(iter.index < prev);
+  segments.push(text.substring(iter.index, prev));
+  prev = iter.index;
+  while (!iter.preceding()) {
+    assertEquals(undefined, iter.breakType);
+    assertTrue(iter.index >= 0);
+    assertTrue(iter.index <= text.length);
+    assertTrue(iter.index < prev);
+    segments.push(text.substring(iter.index, prev));
+    prev = iter.index;
+  }
+  assertEquals(text, segments.reverse().join(""));
+}

implementation-contributed/v8/intl/segmenter/segment-grapheme.js

@@ -0,0 +1,29 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "grapheme"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  assertEquals(undefined, iter.breakType);
+  assertEquals(0, iter.index);
+}

implementation-contributed/v8/intl/segmenter/segment-iterator-following.js

@@ -0,0 +1,26 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const segmenter = new Intl.Segmenter();
+const text = "Hello World, Test 123! Foo Bar. How are you?";
+const iter = segmenter.segment(text);
+
+assertEquals("function", typeof iter.following);
+
+// ToNumber("ABC") return NaN, ToInteger("ABC") return +0, ToIndex("ABC") return 0
+assertDoesNotThrow(() => iter.following("ABC"));
+// ToNumber(null) return +0, ToInteger(null) return +0, ToIndex(null) return 0
+assertDoesNotThrow(() => iter.following(null));
+// ToNumber(1.4) return 1.4, ToInteger(1.4) return 1, ToIndex(1.4) return 1
+assertDoesNotThrow(() => iter.following(1.4));
+
+assertThrows(() => iter.following(-3), RangeError);
+
+// 1.5.3.2 %SegmentIteratorPrototype%.following( [ from ] )
+// 3.b If from >= iterator.[[SegmentIteratorString]], throw a RangeError exception.
+assertDoesNotThrow(() => iter.following(text.length - 1));
+assertThrows(() => iter.following(text.length), RangeError);
+assertThrows(() => iter.following(text.length + 1), RangeError);

implementation-contributed/v8/intl/segmenter/segment-iterator-ownPropertyDescriptor.js

@@ -0,0 +1,91 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+let seg = new Intl.Segmenter();
+let descriptor = Object.getOwnPropertyDescriptor(
+    Intl.Segmenter, "supportedLocalesOf");
+assertTrue(descriptor.writable);
+assertFalse(descriptor.enumerable);
+assertTrue(descriptor.configurable);
+
+// ecma402 #sec-Intl.Segmenter.prototype
+// Intl.Segmenter.prototype
+// The value of Intl.Segmenter.prototype is %SegmenterPrototype%.
+// This property has the attributes
+// { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }.
+descriptor = Object.getOwnPropertyDescriptor(Intl.Segmenter, "prototype");
+assertFalse(descriptor.writable);
+assertFalse(descriptor.enumerable);
+assertFalse(descriptor.configurable);
+
+for (let func of ["segment", "resolvedOptions"]) {
+  let descriptor = Object.getOwnPropertyDescriptor(
+      Intl.Segmenter.prototype, func);
+  assertTrue(descriptor.writable);
+  assertFalse(descriptor.enumerable);
+  assertTrue(descriptor.configurable);
+}
+
+let segmentIterator = seg.segment('text');
+let prototype = Object.getPrototypeOf(segmentIterator);
+for (let func of ["next", "following", "preceding"]) {
+  let descriptor = Object.getOwnPropertyDescriptor(prototype, func);
+  assertTrue(descriptor.writable);
+  assertFalse(descriptor.enumerable);
+  assertTrue(descriptor.configurable);
+}
+
+function checkGetterProperty(prototype, property) {
+  let desc = Object.getOwnPropertyDescriptor(prototype, property);
+  assertEquals(`get ${property}`, desc.get.name);
+  assertEquals('function', typeof desc.get)
+  assertEquals(undefined, desc.set);
+  assertFalse(desc.enumerable);
+  assertTrue(desc.configurable);
+}
+
+// Test the descriptor is correct for properties.
+checkGetterProperty(prototype, 'index');
+checkGetterProperty(prototype, 'breakType');
+
+// Test the SegmentIteratorPrototype methods are called with same
+// receiver and won't throw.
+assertDoesNotThrow(() => prototype.next.call(segmentIterator));
+assertDoesNotThrow(() => prototype.following.call(segmentIterator));
+assertDoesNotThrow(() => prototype.preceding.call(segmentIterator));
+
+// Test the SegmentIteratorPrototype methods are called with a different
+// receiver and correctly throw.
+var otherReceivers = [
+    1, 123.45, undefined, null, "string", true, false,
+    Intl, Intl.Segmenter, Intl.Segmenter.prototype,
+    prototype,
+    new Intl.Segmenter(),
+    new Intl.Collator(),
+    new Intl.DateTimeFormat(),
+    new Intl.NumberFormat(),
+];
+for (let rec of otherReceivers) {
+   assertThrows(() => prototype.next.call(rec), TypeError);
+   assertThrows(() => prototype.following.call(rec), TypeError);
+   assertThrows(() => prototype.preceding.call(rec), TypeError);
+}
+
+// Check the property of the return object of next()
+let nextReturn = segmentIterator.next();
+
+function checkProperty(obj, property) {
+  let desc = Object.getOwnPropertyDescriptor(obj, property);
+  assertTrue(desc.writable);
+  assertTrue(desc.enumerable);
+  assertTrue(desc.configurable);
+}
+
+checkProperty(nextReturn, 'done');
+checkProperty(nextReturn, 'value');
+checkProperty(nextReturn.value, 'segment');
+checkProperty(nextReturn.value, 'breakType');
+checkProperty(nextReturn.value, 'index');

implementation-contributed/v8/intl/segmenter/segment-iterator-position.js

@@ -0,0 +1,11 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const segmenter = new Intl.Segmenter();
+const text = "Hello World, Test 123! Foo Bar. How are you?";
+const iter = segmenter.segment(text);
+
+assertEquals(0, iter.index);

implementation-contributed/v8/intl/segmenter/segment-iterator-preceding.js

@@ -0,0 +1,30 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const segmenter = new Intl.Segmenter();
+const text = "Hello World, Test 123! Foo Bar. How are you?";
+const iter = segmenter.segment(text);
+
+assertEquals("function", typeof iter.preceding);
+
+// ToNumber("ABC") return NaN, ToInteger("ABC") return +0, ToIndex("ABC") return 0
+assertThrows(() => iter.preceding("ABC"), RangeError);
+// ToNumber(null) return +0, ToInteger(null) return +0, ToIndex(null) return 0
+assertThrows(() => iter.preceding(null), RangeError);
+assertThrows(() => iter.preceding(-3), RangeError);
+
+// ToNumber(1.4) return 1.4, ToInteger(1.4) return 1, ToIndex(1.4) return 1
+assertDoesNotThrow(() => iter.preceding(1.4));
+
+// 1.5.3.3 %SegmentIteratorPrototype%.preceding( [ from ] )
+// 3.b If ... from = 0, throw a RangeError exception.
+assertThrows(() => iter.preceding(0), RangeError);
+
+// 1.5.3.3 %SegmentIteratorPrototype%.preceding( [ from ] )
+// 3.b If from > iterator.[[SegmentIteratorString]] ... , throw a RangeError exception.
+assertDoesNotThrow(() => iter.preceding(text.length - 1));
+assertDoesNotThrow(() => iter.preceding(text.length));
+assertThrows(() => iter.preceding(text.length + 1), RangeError);

implementation-contributed/v8/intl/segmenter/segment-iterator.js

@@ -0,0 +1,15 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const text = "Hello World, Test 123! Foo Bar. How are you?";
+for (const granularity of ["grapheme", "word", "sentence", "line"]) {
+  const segmenter = new Intl.Segmenter("en", { granularity });
+  const iter = segmenter.segment(text);
+
+  assertEquals("number", typeof iter.index);
+  assertEquals(0, iter.index);
+  assertEquals(undefined, iter.breakType);
+}

implementation-contributed/v8/intl/segmenter/segment-line-following.js

@@ -0,0 +1,38 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "line"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let prev = 0;
+  let segments = [];
+  while (!iter.following()) {
+    assertTrue(["soft", "hard"].includes(iter.breakType), iter.breakType);
+    assertTrue(iter.index >= 0);
+    assertTrue(iter.index <= text.length);
+    assertTrue(iter.index > prev);
+    segments.push(text.substring(prev, iter.index));
+    prev = iter.index;
+  }
+  assertEquals(text, segments.join(""));
+}

implementation-contributed/v8/intl/segmenter/segment-line-iterable.js

@@ -0,0 +1,45 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "line"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  let segments = [];
+  // Create another %SegmentIterator% to compare with result from the one that
+  // created in the for of loop.
+  let iter = seg.segment(text);
+  let prev = 0;
+  for (const v of seg.segment(text)) {
+    assertTrue(["soft", "hard"].includes(v.breakType), v.breakType);
+    assertEquals("string", typeof v.segment);
+    assertTrue(v.segment.length > 0);
+    segments.push(v.segment);
+
+    // manually advance the iter.
+    assertFalse(iter.following());
+    assertEquals(iter.breakType, v.breakType);
+    assertEquals(text.substring(prev, iter.index), v.segment);
+    prev = iter.index;
+  }
+  assertTrue(iter.following());
+  assertEquals(text, segments.join(''));
+}

implementation-contributed/v8/intl/segmenter/segment-line-next.js

@@ -0,0 +1,40 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "line"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let segments = [];
+  let oldPos = -1;
+  for (let result = iter.next(); !result.done; result = iter.next()) {
+    const v = result.value;
+    assertTrue(["soft", "hard"].includes(iter.breakType), iter.breakType);
+    assertEquals("string", typeof v.segment);
+    assertTrue(v.segment.length > 0);
+    segments.push(v.segment);
+    assertEquals("number", typeof v.index);
+    assertTrue(oldPos < v.index);
+    oldPos = v.index;
+  }
+  assertEquals(text, segments.join(''));
+}

implementation-contributed/v8/intl/segmenter/segment-line-preceding.js

@@ -0,0 +1,44 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "line"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let prev = text.length;
+  let segments = [];
+  iter.preceding(prev)
+  assertTrue(["soft", "hard"].includes(iter.breakType), iter.breakType);
+  assertTrue(iter.index >= 0);
+  assertTrue(iter.index < prev);
+  segments.push(text.substring(iter.index, prev));
+  prev = iter.index;
+  while (!iter.preceding()) {
+    assertTrue(["soft", "hard"].includes(iter.breakType), iter.breakType);
+    assertTrue(iter.index >= 0);
+    assertTrue(iter.index <= text.length);
+    assertTrue(iter.index < prev);
+    segments.push(text.substring(iter.index, prev));
+    prev = iter.index;
+  }
+  assertEquals(text, segments.reverse().join(""));
+}

implementation-contributed/v8/intl/segmenter/segment-line.js

@@ -0,0 +1,29 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "line"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  assertEquals(undefined, iter.breakType);
+  assertEquals(0, iter.index);
+}

implementation-contributed/v8/intl/segmenter/segment-sentence-following.js

@@ -0,0 +1,38 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "sentence"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let prev = 0;
+  let segments = [];
+  while (!iter.following()) {
+    assertTrue(["sep", "term"].includes(iter.breakType), iter.breakType);
+    assertTrue(iter.index >= 0);
+    assertTrue(iter.index <= text.length);
+    assertTrue(iter.index > prev);
+    segments.push(text.substring(prev, iter.index));
+    prev = iter.index;
+  }
+  assertEquals(text, segments.join(""));
+}

implementation-contributed/v8/intl/segmenter/segment-sentence-iterable.js

@@ -0,0 +1,45 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "sentence"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  let segments = [];
+  // Create another %SegmentIterator% to compare with result from the one that
+  // created in the for of loop.
+  let iter = seg.segment(text);
+  let prev = 0;
+  for (const v of seg.segment(text)) {
+    assertTrue(["sep", "term"].includes(v.breakType), v.breakType);
+    assertEquals("string", typeof v.segment);
+    assertTrue(v.segment.length > 0);
+    segments.push(v.segment);
+
+    // manually advance the iter.
+    assertFalse(iter.following());
+    assertEquals(iter.breakType, v.breakType);
+    assertEquals(text.substring(prev, iter.index), v.segment);
+    prev = iter.index;
+  }
+  assertTrue(iter.following());
+  assertEquals(text, segments.join(''));
+}

implementation-contributed/v8/intl/segmenter/segment-sentence-next.js

@@ -0,0 +1,40 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "sentence"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let segments = [];
+  let oldPos = -1;
+  for (let result = iter.next(); !result.done; result = iter.next()) {
+    const v = result.value;
+    assertTrue(["sep", "term"].includes(iter.breakType), iter.breakType);
+    assertEquals("string", typeof v.segment);
+    assertTrue(v.segment.length > 0);
+    segments.push(v.segment);
+    assertEquals("number", typeof v.index);
+    assertTrue(oldPos < v.index);
+    oldPos = v.index;
+  }
+  assertEquals(text, segments.join(''));
+}

implementation-contributed/v8/intl/segmenter/segment-sentence-preceding.js

@@ -0,0 +1,44 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "sentence"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let prev = text.length;
+  let segments = [];
+  iter.preceding(prev);
+  assertTrue(["sep", "term"].includes(iter.breakType), iter.breakType);
+  assertTrue(iter.index >= 0);
+  assertTrue(iter.index < prev);
+  segments.push(text.substring(iter.index, prev));
+  prev = iter.index;
+  while (!iter.preceding()) {
+    assertTrue(["sep", "term"].includes(iter.breakType), iter.breakType);
+    assertTrue(iter.index >= 0);
+    assertTrue(iter.index <= text.length);
+    assertTrue(iter.index < prev);
+    segments.push(text.substring(iter.index, prev));
+    prev = iter.index;
+  }
+  assertEquals(text, segments.reverse().join(""));
+}

implementation-contributed/v8/intl/segmenter/segment-sentence.js

@@ -0,0 +1,29 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "sentence"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  assertEquals(undefined, iter.breakType);
+  assertEquals(0, iter.index);
+}

implementation-contributed/v8/intl/segmenter/segment-word-following.js

@@ -0,0 +1,38 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "word"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let prev = 0;
+  let segments = [];
+  while (!iter.following()) {
+    assertTrue(["word", "none"].includes(iter.breakType), iter.breakType);
+    assertTrue(iter.index >= 0);
+    assertTrue(iter.index <= text.length);
+    assertTrue(iter.index > prev);
+    segments.push(text.substring(prev, iter.index));
+    prev = iter.index;
+  }
+  assertEquals(text, segments.join(""));
+}

implementation-contributed/v8/intl/segmenter/segment-word-iterable.js

@@ -0,0 +1,45 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "word"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  let segments = [];
+  // Create another %SegmentIterator% to compare with result from the one that
+  // created in the for of loop.
+  let iter = seg.segment(text);
+  let prev = 0;
+  for (const v of seg.segment(text)) {
+    assertTrue(["word", "none"].includes(v.breakType), v.breakType);
+    assertEquals("string", typeof v.segment);
+    assertTrue(v.segment.length > 0);
+    segments.push(v.segment);
+
+    // manually advance the iter.
+    assertFalse(iter.following());
+    assertEquals(iter.breakType, v.breakType);
+    assertEquals(text.substring(prev, iter.index), v.segment);
+    prev = iter.index;
+  }
+  assertTrue(iter.following());
+  assertEquals(text, segments.join(''));
+}

implementation-contributed/v8/intl/segmenter/segment-word-next.js

@@ -0,0 +1,40 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "word"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let segments = [];
+  let oldPos = -1;
+  for (let result = iter.next(); !result.done; result = iter.next()) {
+    const v = result.value;
+    assertTrue(["word", "none"].includes(iter.breakType), iter.breakType);
+    assertEquals("string", typeof v.segment);
+    assertTrue(v.segment.length > 0);
+    segments.push(v.segment);
+    assertEquals("number", typeof v.index);
+    assertTrue(oldPos < v.index);
+    oldPos = v.index;
+  }
+  assertEquals(text, segments.join(''));
+}

implementation-contributed/v8/intl/segmenter/segment-word-preceding.js

@@ -0,0 +1,44 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "word"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  let prev = text.length;
+  let segments = [];
+  iter.preceding(prev);
+  assertTrue(["word", "none"].includes(iter.breakType), iter.breakType);
+  assertTrue(iter.index >= 0);
+  assertTrue(iter.index < prev);
+  segments.push(text.substring(iter.index, prev));
+  prev = iter.index;
+  while (!iter.preceding()) {
+    assertTrue(["word", "none"].includes(iter.breakType), iter.breakType);
+    assertTrue(iter.index >= 0);
+    assertTrue(iter.index <= text.length);
+    assertTrue(iter.index < prev);
+    segments.push(text.substring(iter.index, prev));
+    prev = iter.index;
+  }
+  assertEquals(text, segments.reverse().join(""));
+}

implementation-contributed/v8/intl/segmenter/segment-word.js

@@ -0,0 +1,29 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+const seg = new Intl.Segmenter([], {granularity: "word"})
+for (const text of [
+    "Hello world!", // English
+    " Hello world! ",  // English with space before/after
+    " Hello world? Foo bar!", // English
+    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
+    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
+    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
+    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
+    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
+    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
+    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
+    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
+    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
+    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
+    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
+    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
+    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
+    ]) {
+  const iter = seg.segment(text);
+  assertEquals(undefined, iter.breakType);
+  assertEquals(0, iter.index);
+}

implementation-contributed/v8/mjsunit/es6/regress/regress-7706.js

@@ -4,13 +4,37 @@
 
 // Flags: --allow-natives-syntax
 
-class Test extends Number {}
-Test.prototype[Symbol.toStringTag] = "Test";
-
 function toString(o) {
   %ToFastProperties(o.__proto__);
   return Object.prototype.toString.call(o);
 }
 
-assertEquals("[object Test]", toString(new Test), "Try #1");
-assertEquals("[object Test]", toString(new Test), "Try #2");
+class TestNumber extends Number {}
+TestNumber.prototype[Symbol.toStringTag] = "TestNumber";
+assertEquals("[object TestNumber]", toString(new TestNumber), "Try #1");
+assertEquals("[object TestNumber]", toString(new TestNumber), "Try #2");
+
+class TestBoolean extends Boolean {}
+TestBoolean.prototype[Symbol.toStringTag] = "TestBoolean";
+assertEquals("[object TestBoolean]", toString(new TestBoolean), "Try #1");
+assertEquals("[object TestBoolean]", toString(new TestBoolean), "Try #2");
+
+class TestString extends String {}
+TestString.prototype[Symbol.toStringTag] = "TestString";
+assertEquals("[object TestString]", toString(new TestString), "Try #1");
+assertEquals("[object TestString]", toString(new TestString), "Try #2");
+
+class base {}
+class TestBigInt extends base {}
+TestBigInt.prototype[Symbol.toStringTag] = 'TestBigInt';
+var b = new TestBigInt();
+b.__proto__.__proto__ = BigInt.prototype;
+assertEquals("[object TestBigInt]", toString(b), "Try #1");
+assertEquals("[object TestBigInt]", toString(b), "Try #2");
+
+class TestSymbol extends base {}
+TestSymbol.prototype[Symbol.toStringTag] = 'TestSymbol';
+var sym = new TestSymbol();
+sym.__proto__.__proto__ = Symbol.prototype;
+assertEquals("[object TestSymbol]", toString(sym), "Try #1");
+assertEquals("[object TestSymbol]", toString(sym), "Try #2");

implementation-contributed/v8/mjsunit/es8/async-arrow-default-function-await.js

@@ -0,0 +1,5 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+async(o = (function(await) {})) => 0

implementation-contributed/v8/mjsunit/regress/regress-8607.js

@@ -0,0 +1,7 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+assertThrows("[({ p: this }), [][0]] = x", SyntaxError);
+assertThrows("[...a, [][0]] = []", SyntaxError);
+assertThrows("[...o=1,[][0]] = []", SyntaxError);

implementation-contributed/v8/mjsunit/regress/regress-907479.js

@@ -0,0 +1,23 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+'use strict';
+
+{
+  const x = [42];
+  x.splice(0, 0, 23);
+  assertEquals([23, 42], x);
+  x.length++;
+  assertEquals([23, 42, ,], x);
+  assertFalse(x.hasOwnProperty(2));
+}
+
+{
+  const x = [4.2];
+  x.splice(0, 0, 23);
+  assertEquals([23, 4.2], x);
+  x.length++;
+  assertEquals([23, 4.2, ,], x);
+  assertFalse(x.hasOwnProperty(2));
+}

implementation-contributed/v8/mjsunit/regress/regress-crbug-800032.js

@@ -6,10 +6,7 @@
 
 
 class Derived extends RegExp {
-  constructor(a) {
-    // Syntax Error
-    const a = 1;
-  }
+  constructor(a) { throw "error" }
 }
 
 let o = Reflect.construct(RegExp, [], Derived);

implementation-contributed/v8/mjsunit/regress/regress-crbug-806388.js

@@ -5,10 +5,7 @@
 // Flags: --allow-natives-syntax --enable-slow-asserts --expose-gc
 
 class Derived extends Array {
-    constructor(a) {
-      // Syntax Error.
-      const a = 1;
-    }
+    constructor(a) { throw "error" }
 }
 
 // Derived is not a subclass of RegExp

implementation-contributed/v8/mjsunit/regress/regress-crbug-915783.js

@@ -0,0 +1,35 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+const constructors = [
+  [Uint8Array, [0, 1]],
+  [Int8Array, [0, 1]],
+  [Uint16Array, [0, 1]],
+  [Int16Array, [0, 1]],
+  [Uint32Array, [0, 1]],
+  [Int32Array, [0, 1]],
+  [Float32Array, [0, 1]],
+  [Float64Array, [0, 1]],
+  [Uint8ClampedArray, [0, 1]],
+  [BigInt64Array, [0n, 1n]],
+  [BigUint64Array, [0n, 1n]]
+];
+
+let typedArray;
+function detachBuffer() {
+  %ArrayBufferDetach(typedArray.buffer);
+  return 'a';
+}
+Number.prototype.toString = detachBuffer;
+BigInt.prototype.toString = detachBuffer;
+Number.prototype.toLocaleString = detachBuffer;
+BigInt.prototype.toLocaleString = detachBuffer;
+
+constructors.forEach(([constructor, arr]) => {
+  typedArray = new constructor(arr);
+  assertSame(typedArray.join(), '0,1');
+  assertSame(typedArray.toLocaleString(), 'a,');
+});