`import * as Self from '.'` should work in every implementation of ESM
that's shipped so far that I'm aware of.
On Wed, Apr 24, 2019 at 8:39 AM Randy Buchholz <w...@randybuchholz.com>
wrote:
> Maybe my example was misleading by using an `import`. What I’m talking
> about is inspecting the module from within itself. Similar to `this` or
> `self`, AFAIK, I can’t get a reference to the module from within the
> module – e.g., `module`. Say, I’m in a module that has a default export of
> class “Foo”. In a function **in** that module (or class), I want to
> create an instance of that default export. I can do it by name `new Foo()`.
> But, in more generic code, I need to do it by “role” - `default`. So my
> generic version wants something that represents `new module.default()`.
> This is because I may not have access to the name – say the function is in
> a base class. Take for example a “type” module, that is a wrapper for a
> single class, and the filename = class name. One way I can implement
> `instanceof` is a string approach:
>
>
>
> ```
>
> // Foo.mjs
>
> export default class Foo {
>
> static type = import.meta.url;
>
>
>
> meta = { type: import.meta.url };
>
>
>
> // instanceof
>
> static [Symbol.hasInstance](instance) {
>
> return instance.meta.type === Foo.type;
>
> }
>
> }
>
> ```
>
> Some weaknesses are it’s strings, and I need to know the name of the class
> (for `Foo.type`). So I can’t move this to a base class.
>
>
>
> With module reflection, I could do this with objects:
>
> ```
>
> // Foo.mjs
>
> export default class Foo {
>
> meta = { type: import.reflect.default };
>
>
>
> // instanceof
>
> static [Symbol.hasInstance](instance) {
>
> return instance.meta.type === import.reflect.default;
>
> }
>
> }
>
> ```
>
>
>
> A similar idea would be to define a Module Scope - `module`. Within a
> module, using `module` would be like a “static self” – it works on the
> structure (e.g., definition) of the module.
>
> Then `import.reflect.default` could be `module.default`.
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>
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