fix: Remove error message wrapping of Cypress.Blob return values

packages/driver/cypress/integration/util/blob_spec.js

@@ -0,0 +1,32 @@
+describe('blob-util 2.x', () => {
+  const { Blob, Promise } = Cypress
+
+  // https://github.com/cypress-io/cypress/issues/8365
+  ;[
+    ['arrayBufferToBlob', '1234'],
+    ['base64StringToBlob', '1234'],
+    ['binaryStringToBlob', '0100101'],
+    ['dataURLToBlob', 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=='],
+  ].forEach(([method, value]) => {
+    it(`Cypress.Blob.${method} does not error when wrapped by Promise methods`, () => {
+      return Promise.all([
+        Promise.resolve(Blob[method](value)),
+        Promise.try(() => Blob[method](value)),
+      ])
+    })
+
+    it(`Cypress.Blob.${method} does not error with 5.0.0 workaround`, () => {
+      // this is the 5.0.0 workaround that the cypress-file-upload plugin uses
+      const wrapBlob = (blob) => {
+        delete blob.then
+
+        return Cypress.Promise.resolve(blob)
+      }
+
+      return Promise.all([
+        Promise.resolve(wrapBlob(Blob[method](value))),
+        Promise.try(() => wrapBlob(Blob[method](value))),
+      ])
+    })
+  })
+})

packages/driver/src/cypress.js

@@ -34,7 +34,6 @@ const $scriptUtils = require('./cypress/script_utils')
 const browserInfo = require('./cypress/browser')
 const resolvers = require('./cypress/resolvers')
 const debug = require('debug')('cypress:driver:cypress')
-const { wrapBlobUtil } = require('./util/breaking_change_warning')
 
 const jqueryProxyFn = function (...args) {
   if (!this.cy) {
@@ -646,7 +645,7 @@ $Cypress.prototype.SelectorPlayground = $SelectorPlayground
 $Cypress.prototype.utils = $utils
 $Cypress.prototype._ = _
 $Cypress.prototype.moment = moment
-$Cypress.prototype.Blob = wrapBlobUtil(blobUtil)
+$Cypress.prototype.Blob = blobUtil
 $Cypress.prototype.Promise = Promise
 $Cypress.prototype.minimatch = minimatch
 $Cypress.prototype.sinon = sinon

packages/driver/src/cypress/error_messages.js

@@ -153,15 +153,6 @@ module.exports = {
     },
   },
 
-  breaking_change: {
-    blob_util2 (obj) {
-      return {
-        message: `\`${obj.functionName}()\` no longer returns a \`Promise\`. Update the use of \`${obj.functionName}()\` to expect a returned \`Blob\`.`,
-        docsUrl: 'https://on.cypress.io/migration-guide',
-      }
-    },
-  },
-
   browser: {
     invalid_arg: '{{prefix}} must be passed a string, object, or an array. You passed: `{{obj}}`',
   },
@@ -385,9 +376,9 @@ module.exports = {
     not_scrollable: {
       message: stripIndent`\
         ${cmd('{{cmd}}')} failed because this element is not scrollable:
-  
+
         \`{{node}}\`
-  
+
         Make sure you're targeting the correct element or use \`{ensureScrollable: false}\` to disable the scrollable check.`,
       docsUrl: 'https://on.cypress.io/scrollto',
     },
@@ -893,8 +884,8 @@ module.exports = {
     it('{{title}}', { retries: {{numRetries}} }, () => {
       ...
     })
-    \`\`\`  
-    
+    \`\`\`
+
     https://on.cypress.io/test-retries
     `,
     manually_set_retries_suite: stripIndent`\
@@ -906,8 +897,8 @@ module.exports = {
     describe('{{title}}', { retries: {{numRetries}} }, () => {
       ...
     })
-    \`\`\`  
-    
+    \`\`\`
+
     https://on.cypress.io/test-retries
     `,
 
@@ -1856,9 +1847,9 @@ module.exports = {
     timed_out: {
       message: stripIndent`
       ${cmd('wrap')} timed out waiting \`{{timeout}}ms\` to complete.
-      
+
       You called \`cy.wrap()\` with a promise that never resolved.
-      
+
       To increase the timeout, use \`{ timeout: number }\`
       `,
       docsUrl: 'https://on.cypress.io/wrap',