Inclusion of any typed value disables checking of other values

[chrisnojima]

TypeScript Version:
3.5.2

Search Terms:
array any untyped

Code

const poison: any = 3
const arr: Array<number> = [
    1,
    'two',
    poison
]

Expected behavior:
TS would complain about 'two' above. Commenting out poison does show the error. My goal was to type my array to catch bad values getting into it, yet a single anyed value disables me doing any kind of validation

Actual behavior:
TS ignores 'two'

Playground Link:
https://www.typescriptlang.org/play/index.html#code/MYewdgzgLgBADiAlhcAuGBDMBPGBeGAZgChRJYMAnS9AQWo2wB4wBXAWwCMBTSgPnwwA2sRhiYARgA0o8QHIoAdxByZ4+EhRhiAXSA

Related Issues:
Couldn't find it

[RyanCavanaugh]

Duplicate #26184