cleanup
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@ -1164,10 +1164,15 @@ namespace ts.formatting {
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const { column, character } = SmartIndenter.findFirstNonWhitespaceCharacterAndColumn(commentLineStart, commentStart, sourceFile, options);
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return column + /*length after whitespace ends*/ range.pos - (commentLineStart + character);
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}
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return undefined;
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return -1;
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}
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export function getRangeOfEnclosingComment(sourceFile: SourceFile, position: number, onlyMultiLine: boolean): CommentRange | undefined {
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export function getRangeOfEnclosingComment(
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sourceFile: SourceFile,
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position: number,
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onlyMultiLine: boolean,
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tokenAtPosition = getTokenAtPosition(sourceFile, position, /*includeJsDocComment*/ false),
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predicate?: (c: CommentRange) => boolean): CommentRange | undefined {
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// Considering a fixed position,
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// - trailing comments are those following and on the same line as the position.
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// - leading comments are those in the range [position, start of next non-trivia token)
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@ -1178,16 +1183,28 @@ namespace ts.formatting {
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// tokens contain all comments in a sourcefile disjointly.
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const precedingToken = findPrecedingToken(position, sourceFile);
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const trailingRangesOfPreviousToken = precedingToken && getTrailingCommentRanges(sourceFile.text, precedingToken.end);
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const leadingCommentRangesOfNextToken = getLeadingCommentRangesOfNode(getTokenAtPosition(sourceFile, position, /*includeJsDocComment*/ false), sourceFile);
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const leadingCommentRangesOfNextToken = getLeadingCommentRangesOfNode(tokenAtPosition, sourceFile);
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const commentRanges = trailingRangesOfPreviousToken && leadingCommentRangesOfNextToken ?
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trailingRangesOfPreviousToken.concat(leadingCommentRangesOfNextToken) :
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trailingRangesOfPreviousToken || leadingCommentRangesOfNextToken;
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if (commentRanges) {
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for (const range of commentRanges) {
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// We need to extend the range when in an unclosed multi-line comment.
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if (range.pos < position && position < range.end ||
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position === range.end && (range.kind === SyntaxKind.SingleLineCommentTrivia || position === sourceFile.getFullWidth())) {
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return onlyMultiLine && range.kind !== SyntaxKind.MultiLineCommentTrivia ? undefined : range;
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// The end marker of a single-line comment does not include the newline character.
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// With caret at `^`, in the following case, we are inside a comment (^ denotes the cursor position):
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//
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// // asdf ^\n
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//
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// But for closed multi-line comments, we don't want to be inside the comment in the following case:
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//
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// /* asdf */^
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//
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// However, unterminated multi-line comments *do* contain their end.
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//
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// Internally, we represent the end of the comment at the newline and closing '/', respectively.
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//
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if ((range.pos < position && position < range.end ||
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position === range.end && (range.kind === SyntaxKind.SingleLineCommentTrivia || position === sourceFile.getFullWidth()))) {
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return (range.kind === SyntaxKind.MultiLineCommentTrivia || !onlyMultiLine) && (!predicate || predicate(range)) ? range : undefined;
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}
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}
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}
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