he/him 
First impressions with TypeScript: - Docs for tsconfig.json are confusing. Why are type checking options under compilerOptions? - The "An import path cannot end in .ts" rule not being optional is maddening
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- tsconfig.json changes seem to require a restart of vscode - No `import type` like in Flow is annoying. Bundler needs to be smart and know if imports are only used as types so they don't effect module order.
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Does TypeScript have object type spreads? In Flow I can do: type a = {a: string}; type b = {b: string}; type c = {...a, ...b};
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Is there any way I can get vscode to show errors for *all* files, not just the ones I open?
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My code is so malformed that it actually caused TypeScript to fail. Impressed and shocked at myself.
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Didn’t Flow add type c = {...a, ...b} because type c = a & b was not working consistently/as expected?
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Not really. You don't want a union of colliding properties, you would want the later spread to overwrite previous properties, just like regular object spread.
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type C = a & b
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That's not the same. type A = { a: void | string }; type B = { a: string }; type AB = A & B; Will result in {a: void | string} when I actually want {a: string} which is what you'd get with {...A, ...B}
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Object type spreads and opaque type aliases are two of the main Flow features I miss when using TypeScript. On the other hand,
@bcherny's TypeScript book helped me realize that there's a lot of advanced stuff in TypeScript that doesn't exist in Flow. -
Having to write `throw new Error()` instead of just using Flow's magic `invariant()` has been another thing making it more painful
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Yes it has spreads :)
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It has object spread. It does not have object type spread.
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