Add node modules and new code for release (#57)

Co-authored-by: taakleton <taakleton@users.noreply.github.com>

node_modules/whatwg-url/dist/urlencoded.js

@@ -0,0 +1,102 @@
+"use strict";
+const { utf8Encode, utf8DecodeWithoutBOM } = require("./encoding");
+const { percentDecodeBytes, utf8PercentEncodeString, isURLEncodedPercentEncode } = require("./percent-encoding");
+
+// https://url.spec.whatwg.org/#concept-urlencoded-parser
+function parseUrlencoded(input) {
+  const sequences = strictlySplitByteSequence(input, 38);
+  const output = [];
+  for (const bytes of sequences) {
+    if (bytes.length === 0) {
+      continue;
+    }
+
+    let name, value;
+    const indexOfEqual = bytes.indexOf(61);
+
+    if (indexOfEqual >= 0) {
+      name = bytes.slice(0, indexOfEqual);
+      value = bytes.slice(indexOfEqual + 1);
+    } else {
+      name = bytes;
+      value = new Uint8Array(0);
+    }
+
+    name = replaceByteInByteSequence(name, 0x2B, 0x20);
+    value = replaceByteInByteSequence(value, 0x2B, 0x20);
+
+    const nameString = utf8DecodeWithoutBOM(percentDecodeBytes(name));
+    const valueString = utf8DecodeWithoutBOM(percentDecodeBytes(value));
+
+    output.push([nameString, valueString]);
+  }
+  return output;
+}
+
+// https://url.spec.whatwg.org/#concept-urlencoded-string-parser
+function parseUrlencodedString(input) {
+  return parseUrlencoded(utf8Encode(input));
+}
+
+// https://url.spec.whatwg.org/#concept-urlencoded-serializer
+function serializeUrlencoded(tuples, encodingOverride = undefined) {
+  let encoding = "utf-8";
+  if (encodingOverride !== undefined) {
+    // TODO "get the output encoding", i.e. handle encoding labels vs. names.
+    encoding = encodingOverride;
+  }
+
+  let output = "";
+  for (const [i, tuple] of tuples.entries()) {
+    // TODO: handle encoding override
+
+    const name = utf8PercentEncodeString(tuple[0], isURLEncodedPercentEncode, true);
+
+    let value = tuple[1];
+    if (tuple.length > 2 && tuple[2] !== undefined) {
+      if (tuple[2] === "hidden" && name === "_charset_") {
+        value = encoding;
+      } else if (tuple[2] === "file") {
+        // value is a File object
+        value = value.name;
+      }
+    }
+
+    value = utf8PercentEncodeString(value, isURLEncodedPercentEncode, true);
+
+    if (i !== 0) {
+      output += "&";
+    }
+    output += `${name}=${value}`;
+  }
+  return output;
+}
+
+function strictlySplitByteSequence(buf, cp) {
+  const list = [];
+  let last = 0;
+  let i = buf.indexOf(cp);
+  while (i >= 0) {
+    list.push(buf.slice(last, i));
+    last = i + 1;
+    i = buf.indexOf(cp, last);
+  }
+  if (last !== buf.length) {
+    list.push(buf.slice(last));
+  }
+  return list;
+}
+
+function replaceByteInByteSequence(buf, from, to) {
+  let i = buf.indexOf(from);
+  while (i >= 0) {
+    buf[i] = to;
+    i = buf.indexOf(from, i + 1);
+  }
+  return buf;
+}
+
+module.exports = {
+  parseUrlencodedString,
+  serializeUrlencoded
+};