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TS2307: Cannot find module #10463
Description
Activity
You want to write
declare module "halfred"(notice the quotes, which implies an import path).Reacted by David Herges and Mateusz GawlińskiAs a heads up, I opened up this bug for you: #10464
The TL;DR is that
- TypeScript used to have "internal" and "external" modules.
- external modules are the same concept as what ES2015 introduced.
- internal modules are a way of containing things locally in a world without ES modules.
- This distinction was confusing so we renamed
- "external modules" to "modules"
- "internal modules" to "namespaces"
This
declare module "foo" { // ... }
declares a module that you can import as
"foo".While these
declare namespace foo { // ... } declare module bar { // ... }
create namespaces named
fooandbarrespectively. But we couldn't remove thedeclare module barsyntax because it was a breaking change, so now it just continues to confuse users.Thanks a lot for your help! 👍
Reacted by Daniel RosenwasserYou're welcome!
- locked and limited conversation to collaborators
on Jun 19, 2018
Code
see https://github.com/proxy/gist.github.com/dherges/701e5965dd5708529410ee47e4b0c798
Expected behavior:
Compilation should be ok, runtime should be ok.
Actual behavior:
Compilation throws error "TS2307: Cannot find module ". Then running the generated .js (on node) works as expected. Module is resolved (through
require()) and produces expected output.Custom typings are in place. Visual Studio Code actually recognizes the typings. However, compilation fails.
Usage error? Is this a mis-understanding or a
tscbug?