Add no-undeclared-imports eslint rule #8017
Merged
+45
−9
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Description
Add no-undeclared-imports eslint rule - this means importing something not declared in package.json (like an indirect dependency) will be a linter error.
This also caught a few cases of us using types from indirect dependencies - this isn't a runtime error (since types get washed away during compile), but it is ugly, so I added those as devDeps.