first commit

frontend/node_modules/rc-table/es/utils/fixUtil.js

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+export function getCellFixedInfo(colStart, colEnd, columns, stickyOffsets, direction) {
+  var startColumn = columns[colStart] || {};
+  var endColumn = columns[colEnd] || {};
+  var fixLeft;
+  var fixRight;
+  if (startColumn.fixed === 'left') {
+    fixLeft = stickyOffsets.left[direction === 'rtl' ? colEnd : colStart];
+  } else if (endColumn.fixed === 'right') {
+    fixRight = stickyOffsets.right[direction === 'rtl' ? colStart : colEnd];
+  }
+  var lastFixLeft = false;
+  var firstFixRight = false;
+  var lastFixRight = false;
+  var firstFixLeft = false;
+  var nextColumn = columns[colEnd + 1];
+  var prevColumn = columns[colStart - 1];
+
+  // need show shadow only when canLastFix is true
+  var canLastFix = nextColumn && !nextColumn.fixed || prevColumn && !prevColumn.fixed || columns.every(function (col) {
+    return col.fixed === 'left';
+  });
+  if (direction === 'rtl') {
+    if (fixLeft !== undefined) {
+      var prevFixLeft = prevColumn && prevColumn.fixed === 'left';
+      firstFixLeft = !prevFixLeft && canLastFix;
+    } else if (fixRight !== undefined) {
+      var nextFixRight = nextColumn && nextColumn.fixed === 'right';
+      lastFixRight = !nextFixRight && canLastFix;
+    }
+  } else if (fixLeft !== undefined) {
+    var nextFixLeft = nextColumn && nextColumn.fixed === 'left';
+    lastFixLeft = !nextFixLeft && canLastFix;
+  } else if (fixRight !== undefined) {
+    var prevFixRight = prevColumn && prevColumn.fixed === 'right';
+    firstFixRight = !prevFixRight && canLastFix;
+  }
+  return {
+    fixLeft: fixLeft,
+    fixRight: fixRight,
+    lastFixLeft: lastFixLeft,
+    firstFixRight: firstFixRight,
+    lastFixRight: lastFixRight,
+    firstFixLeft: firstFixLeft,
+    isSticky: stickyOffsets.isSticky
+  };
+}