Add comments and make some nit changes based on PR feedback
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1 changed files with 11 additions and 5 deletions
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@ -913,6 +913,11 @@ namespace ts {
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}
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export function isPossiblyTypeArgumentPosition(token: Node, sourceFile: SourceFile) {
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// This function determines if the node could be type argument position
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// Since during editing, when type argument list is not complete,
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// the tree could be of any shape depending on the tokens parsed before current node,
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// scanning of the previous identifier followed by "<" before current node would give us better result
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// Note that we also balance out the already provided type arguments, arrays, object literals while doing so
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let remainingLessThanTokens = 0;
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while (token) {
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switch (token.kind) {
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@ -927,11 +932,13 @@ namespace ts {
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break;
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case SyntaxKind.GreaterThanGreaterThanGreaterThanToken:
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remainingLessThanTokens++;
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// falls through
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remainingLessThanTokens = + 3;
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break;
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case SyntaxKind.GreaterThanGreaterThanToken:
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remainingLessThanTokens++;
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// falls through
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remainingLessThanTokens = + 2;
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break;
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case SyntaxKind.GreaterThanToken:
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remainingLessThanTokens++;
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break;
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@ -991,7 +998,6 @@ namespace ts {
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return false;
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}
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/**
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* Returns true if the cursor at position in sourceFile is within a comment.
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*
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