![jestjs - TypeError: Cannot read properties of undefined (reading 'prototype') when Jest testing angular component that includes rappid.js - Stack Overflow jestjs - TypeError: Cannot read properties of undefined (reading 'prototype') when Jest testing angular component that includes rappid.js - Stack Overflow](https://i.stack.imgur.com/MESCI.png)
jestjs - TypeError: Cannot read properties of undefined (reading 'prototype') when Jest testing angular component that includes rappid.js - Stack Overflow
![promise - Odoo error when calling Javascript function: Cannot read property 'then' of undefined - Stack Overflow promise - Odoo error when calling Javascript function: Cannot read property 'then' of undefined - Stack Overflow](https://i.stack.imgur.com/BANp2.png)
promise - Odoo error when calling Javascript function: Cannot read property 'then' of undefined - Stack Overflow
![javascript - TypeError: Cannot read properties of undefined (reading 'requestContent') - Stack Overflow javascript - TypeError: Cannot read properties of undefined (reading 'requestContent') - Stack Overflow](https://i.stack.imgur.com/MlbUy.png)
javascript - TypeError: Cannot read properties of undefined (reading 'requestContent') - Stack Overflow
![then function(){} fails with cannot read property of undefined when run via cypress run, but works with running the UI Test · Issue #15343 · cypress-io/cypress · GitHub then function(){} fails with cannot read property of undefined when run via cypress run, but works with running the UI Test · Issue #15343 · cypress-io/cypress · GitHub](https://user-images.githubusercontent.com/50409397/110143817-a7030180-7da5-11eb-8ab6-aebe305df242.png)
then function(){} fails with cannot read property of undefined when run via cypress run, but works with running the UI Test · Issue #15343 · cypress-io/cypress · GitHub
![javascript - Uncaught TypeError: Cannot read property 'prototype' of undefined (inherits_browser.js) - Stack Overflow javascript - Uncaught TypeError: Cannot read property 'prototype' of undefined (inherits_browser.js) - Stack Overflow](https://i.stack.imgur.com/MxSIj.png)