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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
// This is a specialised implementation of a System module loader.
// eslint-disable-next-line @typescript-eslint/no-unused-vars
let System;
let __inst;
(() => {
const mMap = new Map();
System = {
register(id, deps, f) {
mMap.set(id, {
id,
deps,
f,
exp: {}
});
}
};
const gC = (data, main) => {
const { id } = data;
return {
id,
import: async id => mMap.get(id)?.exp,
meta: { url: id, main }
};
};
const gE = data => {
const { exp } = data;
return (id, value) => {
const values = typeof id === "string" ? { [id]: value } : id;
for (const [id, value] of Object.entries(values)) {
Object.defineProperty(exp, id, {
value,
writable: true,
enumerable: true
});
}
};
};
const iQ = [];
const enq = ids => {
for (const id of ids) {
if (!iQ.includes(id)) {
const { deps } = mMap.get(id);
iQ.push(id);
enq(deps);
}
}
};
const dr = async main => {
const rQ = [];
let id;
while ((id = iQ.pop())) {
const m = mMap.get(id);
const { f } = m;
if (!f) {
return;
}
rQ.push([m.deps, f(gE(m), gC(m, id === main))]);
m.f = undefined;
}
let r;
while ((r = rQ.shift())) {
const [deps, { execute, setters }] = r;
for (let i = 0; i < deps.length; i++) setters[i](mMap.get(deps[i])?.exp);
const e = execute();
if (e) await e;
}
};
__inst = async id => {
System = undefined;
__inst = undefined;
enq([id]);
await dr(id);
return mMap.get(id)?.exp;
};
})();
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