Version 1

[yaffs-website] / node_modules / core-js / modules / es6.regexp.split.js

diff --git a/node_modules/core-js/modules/es6.regexp.split.js b/node_modules/core-js/modules/es6.regexp.split.js
new file mode 100644 (file)
index 0000000..a991a3f
--- /dev/null
+++ b/node_modules/core-js/modules/es6.regexp.split.js
@@ -0,0 +1,70 @@
+// @@split logic
+require('./_fix-re-wks')('split', 2, function(defined, SPLIT, $split){
+  'use strict';
+  var isRegExp   = require('./_is-regexp')
+    , _split     = $split
+    , $push      = [].push
+    , $SPLIT     = 'split'
+    , LENGTH     = 'length'
+    , LAST_INDEX = 'lastIndex';
+  if(
+    'abbc'[$SPLIT](/(b)*/)[1] == 'c' ||
+    'test'[$SPLIT](/(?:)/, -1)[LENGTH] != 4 ||
+    'ab'[$SPLIT](/(?:ab)*/)[LENGTH] != 2 ||
+    '.'[$SPLIT](/(.?)(.?)/)[LENGTH] != 4 ||
+    '.'[$SPLIT](/()()/)[LENGTH] > 1 ||
+    ''[$SPLIT](/.?/)[LENGTH]
+  ){
+    var NPCG = /()??/.exec('')[1] === undefined; // nonparticipating capturing group
+    // based on es5-shim implementation, need to rework it
+    $split = function(separator, limit){
+      var string = String(this);
+      if(separator === undefined && limit === 0)return [];
+      // If `separator` is not a regex, use native split
+      if(!isRegExp(separator))return _split.call(string, separator, limit);
+      var output = [];
+      var flags = (separator.ignoreCase ? 'i' : '') +
+                  (separator.multiline ? 'm' : '') +
+                  (separator.unicode ? 'u' : '') +
+                  (separator.sticky ? 'y' : '');
+      var lastLastIndex = 0;
+      var splitLimit = limit === undefined ? 4294967295 : limit >>> 0;
+      // Make `global` and avoid `lastIndex` issues by working with a copy
+      var separatorCopy = new RegExp(separator.source, flags + 'g');
+      var separator2, match, lastIndex, lastLength, i;
+      // Doesn't need flags gy, but they don't hurt
+      if(!NPCG)separator2 = new RegExp('^' + separatorCopy.source + '$(?!\\s)', flags);
+      while(match = separatorCopy.exec(string)){
+        // `separatorCopy.lastIndex` is not reliable cross-browser
+        lastIndex = match.index + match[0][LENGTH];
+        if(lastIndex > lastLastIndex){
+          output.push(string.slice(lastLastIndex, match.index));
+          // Fix browsers whose `exec` methods don't consistently return `undefined` for NPCG
+          if(!NPCG && match[LENGTH] > 1)match[0].replace(separator2, function(){
+            for(i = 1; i < arguments[LENGTH] - 2; i++)if(arguments[i] === undefined)match[i] = undefined;
+          });
+          if(match[LENGTH] > 1 && match.index < string[LENGTH])$push.apply(output, match.slice(1));
+          lastLength = match[0][LENGTH];
+          lastLastIndex = lastIndex;
+          if(output[LENGTH] >= splitLimit)break;
+        }
+        if(separatorCopy[LAST_INDEX] === match.index)separatorCopy[LAST_INDEX]++; // Avoid an infinite loop
+      }
+      if(lastLastIndex === string[LENGTH]){
+        if(lastLength || !separatorCopy.test(''))output.push('');
+      } else output.push(string.slice(lastLastIndex));
+      return output[LENGTH] > splitLimit ? output.slice(0, splitLimit) : output;
+    };
+  // Chakra, V8
+  } else if('0'[$SPLIT](undefined, 0)[LENGTH]){
+    $split = function(separator, limit){
+      return separator === undefined && limit === 0 ? [] : _split.call(this, separator, limit);
+    };
+  }
+  // 21.1.3.17 String.prototype.split(separator, limit)
+  return [function split(separator, limit){
+    var O  = defined(this)
+      , fn = separator == undefined ? undefined : separator[SPLIT];
+    return fn !== undefined ? fn.call(separator, O, limit) : $split.call(String(O), separator, limit);
+  }, $split];
+});
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