Function quoteString

lib/stringify.js:104–162

(value)

    }

    function quoteString (value) {
        const quotes = {
            "'": 0.1,
            '"': 0.2,
        }

        const replacements = {
            "'": "\\'",
            '"': '\\"',
            '\\': '\\\\',
            '\b': '\\b',
            '\f': '\\f',
            '\n': '\\n',
            '\r': '\\r',
            '\t': '\\t',
            '\v': '\\v',
            '\0': '\\0',
            '\u2028': '\\u2028',
            '\u2029': '\\u2029',
        }

        let product = ''

        for (let i = 0; i < value.length; i++) {
            const c = value[i]
            switch (c) {
            case "'":
            case '"':
                quotes[c]++
                product += c
                continue

            case '\0':
                if (util.isDigit(value[i + 1])) {
                    product += '\\x00'
                    continue
                }
            }

            if (replacements[c]) {
                product += replacements[c]
                continue
            }

            if (c < ' ') {
                let hexString = c.charCodeAt(0).toString(16)
                product += '\\x' + ('00' + hexString).substring(hexString.length)
                continue
            }

            product += c
        }

        const quoteChar = quote || Object.keys(quotes).reduce((a, b) => (quotes[a] < quotes[b]) ? a : b)

        product = product.replace(new RegExp(quoteChar, 'g'), replacements[quoteChar])

        return quoteChar + product + quoteChar