nodejs
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‎lib/buffer.js‎
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‎lib/buffer.js‎
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‎test/parallel/test-btoa-atob-global.js‎
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‎test/parallel/test-btoa-atob-global.js‎
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‎test/parallel/test-btoa-atob.js‎
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‎test/parallel/test-btoa-atob.js‎
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@@ -96,6 +96,7 @@ const {
     ERR_INVALID_ARG_VALUE,
     ERR_INVALID_BUFFER_SIZE,
     ERR_OUT_OF_RANGE,
+    ERR_MISSING_ARGS,
     ERR_UNKNOWN_ENCODING
   },
   hideStackFrames
@@ -1218,6 +1219,9 @@ function btoa(input) {
   // The implementation here has not been performance optimized in any way and
   // should not be.
   // Refs: https://github.com/nodejs/node/pull/38433#issuecomment-828426932
+  if (arguments.length === 0) {
+    throw new ERR_MISSING_ARGS('input');
+  }
   input = `${input}`;
   for (let n = 0; n < input.length; n++) {
     if (input[n].charCodeAt(0) > 0xff)
@@ -1234,6 +1238,9 @@ function atob(input) {
   // The implementation here has not been performance optimized in any way and
   // should not be.
   // Refs: https://github.com/nodejs/node/pull/38433#issuecomment-828426932
+  if (arguments.length === 0) {
+    throw new ERR_MISSING_ARGS('input');
+  }
   input = `${input}`;
   for (let n = 0; n < input.length; n++) {
     if (!kBase64Digits.includes(input[n]))
 
@@ -0,0 +1,14 @@
+'use strict';
+
+require('../common');
+
+const { strictEqual, throws } = require('assert');
+const buffer = require('buffer');
+
+// Exported on the global object
+strictEqual(globalThis.atob, buffer.atob);
+strictEqual(globalThis.btoa, buffer.btoa);
+
+// Throws type error on no argument passed
+throws(() => buffer.atob(), /TypeError/);
+throws(() => buffer.btoa(), /TypeError/);