Method parseUpdateExpression

internal/parser/parser.go:4722–4739

()

}

func (p *Parser) parseUpdateExpression() *ast.Expression {
	pos := p.nodePos()
	if p.token == ast.KindPlusPlusToken || p.token == ast.KindMinusMinusToken {
		operator := p.token
		p.nextToken()
		return p.finishNode(p.factory.NewPrefixUnaryExpression(operator, p.parseLeftHandSideExpressionOrHigher()), pos)
	} else if p.languageVariant == core.LanguageVariantJSX && p.token == ast.KindLessThanToken && p.lookAhead((*Parser).nextTokenIsIdentifierOrKeywordOrGreaterThan) {
		// JSXElement is part of primaryExpression
		return p.parseJsxElementOrSelfClosingElementOrFragment(true /*inExpressionContext*/, -1 /*topInvalidNodePosition*/, nil /*openingTag*/, false /*mustBeUnary*/)
	}
	expression := p.parseLeftHandSideExpressionOrHigher()
	if (p.token == ast.KindPlusPlusToken || p.token == ast.KindMinusMinusToken) && !p.hasPrecedingLineBreak() {
		operator := p.token
		p.nextToken()
		return p.finishNode(p.factory.NewPostfixUnaryExpression(expression, operator), pos)
	}
	return expression
}

func (p *Parser) parseJsxElementOrSelfClosingElementOrFragment(inExpressionContext bool, topInvalidNodePosition int, openingTag *ast.Node, mustBeUnary bool) *ast.Expression {
	pos := p.nodePos()