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This change adds support for auto-imports. The virtual code now contains an empty import of the JSX runtime. This import was chosen, because it must exist anyway. This is immediately followed by an empty code mapping, meaning TypeScript always has a place to insert auto-imports. Since JSX components can be injected, they are sometimes prefixed with `_components.` in the virtual code. To support auto-import completions, an additional mapping is now made to an expression containing merely the identifier. As a result, the editor now shows auto-import completions, unless `MDXProvidedComponents` is defined. I don’t know why the existence of `MDXProvidedComponents` matters, but this probably matches the expectation of users anyway. The auto-imports will not be followed by a blank line. This can lead to a syntax error in case no other imports exist yet. This is not ideal, but easy and straight-forward to resolve manually. Closes #452
remcohaszing
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Description of changes
This change adds support for auto-imports.
The virtual code now contains an empty import of the JSX runtime. This import was chosen, because it must exist anyway. This is immediately followed by an empty code mapping, meaning TypeScript always has a place to insert auto-imports.
Since JSX components can be injected, they are sometimes prefixed with
_components.in the virtual code. To support auto-import completions, an additional mapping is now made to an expression containing merely the identifier. As a result, the editor now shows auto-import completions, unlessMDXProvidedComponentsis defined. I don’t know why the existence ofMDXProvidedComponentsmatters, but this probably matches the expectation of users anyway.The auto-imports will not be followed by a blank line. This can lead to a syntax error in case no other imports exist yet. This is not ideal, but easy and straight-forward to resolve manually.
Closes #452