Dale,
If you are using tabs instead of spaces in the Typescript file, then you can turn off the warnings by adding the below rule to the project’s tslint.json :
"indent": [
true,
"tabs",
4
]
Please also see this reference : https://palantir.github.io/tslint/rules/indent/
Hope this helps. Please let us know how it works for you.
–Swapna
Genuitec Support