Function basicToDigit

lib/punycode.js:156–167

(codePoint)

 * the code point does not represent a value.
 */
const basicToDigit = function(codePoint) {
	if (codePoint >= 0x30 && codePoint < 0x3A) {
		return 26 + (codePoint - 0x30);
	}
	if (codePoint >= 0x41 && codePoint < 0x5B) {
		return codePoint - 0x41;
	}
	if (codePoint >= 0x61 && codePoint < 0x7B) {
		return codePoint - 0x61;
	}
	return base;
};

/**
 * Converts a digit/integer into a basic code point.