* Use "lib" in tsconfigs instead of "target". Only add "dom" to libraries that need it. This is determined by a script, so many libraries that have "dom" maybe should not. * Update new-package and readme * Add back "target" where necessary
this
* array-find-index: Provide `this` type * Also turn on --strictNullChecks
* Add "noImplicitThis" to all tsconfig.json * Use `"noImplicitThis": false` on packages with broken tests.