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rOACCT/node_modules/micromark/dist/util/normalize-uri.js
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normalize-uri.js
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			'use strict'

			var asciiAlphanumeric = require('../character/ascii-alphanumeric.js')
			var fromCharCode = require('../constant/from-char-code.js')

			// encoded sequences.

			function normalizeUri(value) {
			var index = -1
			var result = []
			var start = 0
			var skip = 0
			var code
			var next
			var replace

			while (++index < value.length) {
			code = value.charCodeAt(index) // A correct percent encoded value.

			if (
			code === 37 &&
			asciiAlphanumeric(value.charCodeAt(index + 1)) &&
			asciiAlphanumeric(value.charCodeAt(index + 2))
			) {
			skip = 2
			} // ASCII.
			else if (code < 128) {
			if (!/[!#$&-;=?-Z_a-z~]/.test(fromCharCode(code))) {
			replace = fromCharCode(code)
			}
			} // Astral.
			else if (code > 55295 && code < 57344) {
			next = value.charCodeAt(index + 1) // A correct surrogate pair.

			if (code < 56320 && next > 56319 && next < 57344) {
			replace = fromCharCode(code, next)
			skip = 1
			} // Lone surrogate.
			else {
			replace = '\uFFFD'
			}
			} // Unicode.
			else {
			replace = fromCharCode(code)
			}

			if (replace) {
			result.push(value.slice(start, index), encodeURIComponent(replace))
			start = index + skip + 1
			replace = undefined
			}

			if (skip) {
			index += skip
			skip = 0
			}
			}

			return result.join('') + value.slice(start)
			}

			module.exports = normalizeUri