fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/devalue/src/base64.js

@@ -0,0 +1,110 @@
+/**
+ * Base64 Encodes an arraybuffer
+ * @param {ArrayBuffer} arraybuffer
+ * @returns {string}
+ */
+export function encode64(arraybuffer) {
+  const dv = new DataView(arraybuffer);
+  let binaryString = "";
+
+  for (let i = 0; i < arraybuffer.byteLength; i++) {
+    binaryString += String.fromCharCode(dv.getUint8(i));
+  }
+
+  return binaryToAscii(binaryString);
+}
+
+/**
+ * Decodes a base64 string into an arraybuffer
+ * @param {string} string
+ * @returns {ArrayBuffer}
+ */
+export function decode64(string) {
+  const binaryString = asciiToBinary(string);
+  const arraybuffer = new ArrayBuffer(binaryString.length);
+  const dv = new DataView(arraybuffer);
+
+  for (let i = 0; i < arraybuffer.byteLength; i++) {
+    dv.setUint8(i, binaryString.charCodeAt(i));
+  }
+
+  return arraybuffer;
+}
+
+const KEY_STRING =
+  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+/**
+ * Substitute for atob since it's deprecated in node.
+ * Does not do any input validation.
+ *
+ * @see https://github.com/jsdom/abab/blob/master/lib/atob.js
+ *
+ * @param {string} data
+ * @returns {string}
+ */
+function asciiToBinary(data) {
+  if (data.length % 4 === 0) {
+    data = data.replace(/==?$/, "");
+  }
+
+  let output = "";
+  let buffer = 0;
+  let accumulatedBits = 0;
+
+  for (let i = 0; i < data.length; i++) {
+    buffer <<= 6;
+    buffer |= KEY_STRING.indexOf(data[i]);
+    accumulatedBits += 6;
+    if (accumulatedBits === 24) {
+      output += String.fromCharCode((buffer & 0xff0000) >> 16);
+      output += String.fromCharCode((buffer & 0xff00) >> 8);
+      output += String.fromCharCode(buffer & 0xff);
+      buffer = accumulatedBits = 0;
+    }
+  }
+  if (accumulatedBits === 12) {
+    buffer >>= 4;
+    output += String.fromCharCode(buffer);
+  } else if (accumulatedBits === 18) {
+    buffer >>= 2;
+    output += String.fromCharCode((buffer & 0xff00) >> 8);
+    output += String.fromCharCode(buffer & 0xff);
+  }
+  return output;
+}
+
+/**
+ * Substitute for btoa since it's deprecated in node.
+ * Does not do any input validation.
+ *
+ * @see https://github.com/jsdom/abab/blob/master/lib/btoa.js
+ *
+ * @param {string} str
+ * @returns {string}
+ */
+function binaryToAscii(str) {
+  let out = "";
+  for (let i = 0; i < str.length; i += 3) {
+    /** @type {[number, number, number, number]} */
+    const groupsOfSix = [undefined, undefined, undefined, undefined];
+    groupsOfSix[0] = str.charCodeAt(i) >> 2;
+    groupsOfSix[1] = (str.charCodeAt(i) & 0x03) << 4;
+    if (str.length > i + 1) {
+      groupsOfSix[1] |= str.charCodeAt(i + 1) >> 4;
+      groupsOfSix[2] = (str.charCodeAt(i + 1) & 0x0f) << 2;
+    }
+    if (str.length > i + 2) {
+      groupsOfSix[2] |= str.charCodeAt(i + 2) >> 6;
+      groupsOfSix[3] = str.charCodeAt(i + 2) & 0x3f;
+    }
+    for (let j = 0; j < groupsOfSix.length; j++) {
+      if (typeof groupsOfSix[j] === "undefined") {
+        out += "=";
+      } else {
+        out += KEY_STRING[groupsOfSix[j]];
+      }
+    }
+  }
+  return out;
+}