mirror of
https://github.com/denoland/deno.git
synced 2024-12-22 15:24:46 -05:00
20 lines
506 B
JavaScript
20 lines
506 B
JavaScript
// Importing the same module in parallel, the module should only be
|
|
// instantiated once.
|
|
|
|
const promises = new Array(100)
|
|
.fill(null)
|
|
.map(() => import("./subdir/mod1.ts"));
|
|
|
|
Promise.all(promises).then(imports => {
|
|
const mod = imports.reduce((first, cur) => {
|
|
if (typeof first !== "object") {
|
|
throw new Error("Expected an object.");
|
|
}
|
|
if (first !== cur) {
|
|
throw new Error("More than one instance of the same module.");
|
|
}
|
|
return first;
|
|
});
|
|
|
|
mod.printHello3();
|
|
});
|