Function identifierNameStartEscape

lib/parse.js:312–334

()

    },

    identifierNameStartEscape () {
        if (c !== 'u') {
            throw invalidChar(read())
        }

        read()
        const u = unicodeEscape()
        switch (u) {
        case '$':
        case '_':
            break

        default:
            if (!util.isIdStartChar(u)) {
                throw invalidIdentifier()
            }

            break
        }

        buffer += u
        lexState = 'identifierName'
    },

    identifierName () {
        switch (c) {