Method emitLeadingCommentsOfNode

internal/printer/printer.go:5386–5419

(node *ast.Node, emitFlags EmitFlags, commentRange core.TextRange)

}

func (p *Printer) emitLeadingCommentsOfNode(node *ast.Node, emitFlags EmitFlags, commentRange core.TextRange) {
	pos := commentRange.Pos()
	end := commentRange.End()

	// Save current container state on the stack.
	if (!ast.PositionIsSynthesized(pos) || !ast.PositionIsSynthesized(end)) && pos != end {
		// We have to explicitly check that the node is JsxText because if the compilerOptions.jsx is "preserve" we will not do any transformation.
		// It is expensive to walk entire tree just to set one kind of node to have no comments.
		skipLeadingComments := ast.PositionIsSynthesized(pos) || emitFlags&EFNoLeadingComments != 0 || node.Kind == ast.KindJsxText
		skipTrailingComments := ast.PositionIsSynthesized(end) || emitFlags&EFNoTrailingComments != 0 || node.Kind == ast.KindJsxText

		// Emit leading comments if the position is not synthesized and the node
		// has not opted out from emitting leading comments.
		if !skipLeadingComments {
			p.emitLeadingComments(pos, node.Kind == ast.KindNotEmittedStatement /*elided*/)
		}

		if !skipLeadingComments || (pos >= 0 && (emitFlags&EFNoLeadingComments) != 0) {
			// Advance the container position if comments get emitted or if they've been disabled explicitly using NoLeadingComments.
			p.containerPos = pos
		}

		if !skipTrailingComments || (end >= 0 && (emitFlags&EFNoTrailingComments) != 0) {
			// Advance the container end if comments get emitted or if they've been disabled explicitly using NoTrailingComments.
			p.containerEnd = end

			// To avoid invalid comment emit in a down-level binding pattern, we
			// keep track of the last declaration list container's end
			if node.Kind == ast.KindVariableDeclarationList {
				p.declarationListContainerEnd = end
			}
		}
	}
}

func (p *Printer) emitTrailingCommentsOfNode(node *ast.Node, emitFlags EmitFlags, commentRange core.TextRange, containerPos int, containerEnd int, declarationListContainerEnd int) {
	pos := commentRange.Pos()