Typescript 4.5 broken in 0.22.16 & 0.23.0-beta.2

[Julusian]

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Expected Behavior

Typedoc would work with typescript 4.5

Actual Behavior

TypeDoc exiting with unexpected error:
TypeError: context.checker.getTypeOfSymbol is not a function
    at Object.convertProperty (/home/julus/Projects/typedoc-test/node_modules/typedoc/dist/lib/converter/symbols.js:370:176)
    at convertSymbol (/home/julus/Projects/typedoc-test/node_modules/typedoc/dist/lib/converter/symbols.js:132:88)
    at convertSymbols (/home/julus/Projects/typedoc-test/node_modules/typedoc/dist/lib/converter/symbols.js:138:9)
    at Object.convertClassOrInterface (/home/julus/Projects/typedoc-test/node_modules/typedoc/dist/lib/converter/symbols.js:301:5)
    at convertSymbol (/home/julus/Projects/typedoc-test/node_modules/typedoc/dist/lib/converter/symbols.js:132:88)
    at Converter.convertExports (/home/julus/Projects/typedoc-test/node_modules/typedoc/dist/lib/converter/converter.js:188:41)
    at /home/julus/Projects/typedoc-test/node_modules/typedoc/dist/lib/converter/converter.js:156:30
    at Array.forEach (<anonymous>)
    at Converter.compile (/home/julus/Projects/typedoc-test/node_modules/typedoc/dist/lib/converter/converter.js:154:17)
    at Converter.convert (/home/julus/Projects/typedoc-test/node_modules/typedoc/dist/lib/converter/converter.js:36:14)

Steps to reproduce the bug

1. Clone https://github.com/Julusian/typedoc-test
2. yarn install (or npm install)
3. npm run docs or yarn docs

Removing the _duration property from the class Test causes the error to go away, so it is something to do with those private properties

Downgrading typedoc to 0.22.15 avoids this bug

Environment

• Typedoc version: 0.22.16 & 0.23.0-beta.2
• TypeScript version: 4.5.5
• Node.js version: v16.14.0 & v14.19.3
• OS: Ubuntu 20.04/21.10

[Gerrit0]

I thought that function had been around... forever... easy fix at least...

[Gerrit0]

(Also: Not going to fix this for the beta version, 0.23 will drop support for TS < 4.6, following the supported TS version policy, using this function allows getting rid of a hack I've wanted out of the code for over a year)

[Julusian]

Perfect, I can confirm that 0.22.17 is now working for me
Thanks for fixing this so quickly!