Exploring the code snippet from the official module guide, we see:
import x, {y} from "hot-new-module";
x(y);
This syntax raises a question: why is 'x' not within curly brackets? What does this coding structure signify?
Exploring the code snippet from the official module guide, we see:
import x, {y} from "hot-new-module";
x(y);
This syntax raises a question: why is 'x' not within curly brackets? What does this coding structure signify?
a
is the primary export. b
is a specific export.
Script.js
export class b { }
const a = (sampleVar: b) => { /* */ };
export default a;
This code can be utilized with your method
import a, {b} from "brand-new-package";
a(b);
I initially had some difficulty grasping that section of the guide, but with persistence, I was able to make sense of it. Essentially, what they are trying to convey is that you can create a declaration file containing solely declare module "mymodulename";
. Subsequently, you have the liberty to import anything from that module without explicitly declaring them.
This is why any imported item will be classified under the any type. For instance:
abbreviatedmodule.d.ts
declare module "hot-new-module";
myfile.ts
import xyz, {y}, {something} from "hot-new-module"
xyz, y, and something are all categorized as the any type; hence, allowing you to manipulate them in various ways like so:
xyz(y)
y(xyz)
something[y]
something.unknownproperty = true
The absence of curly brackets around xyz signifies that it refers to a default export
within the module. Each module can only contain one default export, which explains why only 'xyz' lacks the brackets. However, any of the imports could potentially serve as the default export since none were formally declared anyways.
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