Function FindPrecedingToken

internal/astnav/tokens.go:328–330

Finds the leftmost token satisfying `position < token.End()`. If the leftmost token satisfying `position < token.End()` is invalid, or if position is in the trivia of that leftmost token, we will find the rightmost valid token with `token.End() <= position`.

(sourceFile *ast.SourceFile, position int)

// is in the trivia of that leftmost token,
// we will find the rightmost valid token with `token.End() <= position`.
func FindPrecedingToken(sourceFile *ast.SourceFile, position int) *ast.Node {
	return FindPrecedingTokenEx(sourceFile, position, nil, false)
}

func FindPrecedingTokenEx(sourceFile *ast.SourceFile, position int, startNode *ast.Node, excludeJSDoc bool) *ast.Node {
	var find func(node *ast.Node) *ast.Node