95 lines
2.5 KiB
JavaScript
95 lines
2.5 KiB
JavaScript
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"use strict";
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const fs = require("fs");
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const { loadJson, resolve } = require("./utils");
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const ROOT = resolve("packages");
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const dirnames = fs.readdirSync(ROOT);
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function loadPackage(dirname) {
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return loadJson(resolve("packages", dirname, "package.json"));
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}
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function getOrdered(skipNobuild) {
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let packages = { };
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let filenames = { };
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let addDeps = (name, depends) => {
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Object.keys(depends).forEach((dep) => {
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// Not a package we manage
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if (packages[dep] == null) { return; }
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deps[name][dep] = true;
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});
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}
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for (let i = 0; i < dirnames.length; i++) {
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let dirname = dirnames[i];
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let info = loadPackage(dirname);
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if (skipNobuild && info._ethers_nobuild) { continue; }
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packages[info.name] = info;
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filenames[info.name] = dirname;
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}
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// Maps names to list of dependencies; { [ name:string]: Array<name: string> }
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let deps = { };
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let depGraph = { };
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Object.keys(packages).forEach((name) => {
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let info = packages[name];
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deps[info.name] = { };
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addDeps(info.name, info.dependencies || { });
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addDeps(info.name, info.devDependencies || { });
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deps[info.name] = Object.keys(deps[info.name]);
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deps[info.name].sort();
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});
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let ordered = [ ];
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let remaining = Object.keys(deps);
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let isSatisfied = (name) => {
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for (let i = 0; i < deps[name].length; i++) {
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if (ordered.indexOf(deps[name][i]) === -1) { return false; }
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}
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return true;
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}
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while (remaining.length) {
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let bail = true;
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for (let i = 0; i < remaining.length; i++) {
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if (!isSatisfied(remaining[i])) { continue; }
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bail = false;
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ordered.push(remaining[i]);
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remaining.splice(i, 1);
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break;
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}
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if (bail) {
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throw new Error("Nothing processed; circular dependencies...");
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}
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}
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return ordered.map((name) => filenames[name]);
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}
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function sort(dirnames) {
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let ordered = getOrdered();
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dirnames.sort((a, b) => {
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let ai = ordered.indexOf(local.loadPackage(a).name);
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let bi = ordered.indexOf(local.loadPackage(b).name);
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if (ai === -1 || bi === -1) {
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throw new Error("unknown dirname - " + [a, b].join(", "));
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}
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return ai - bi;
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});
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}
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module.exports = {
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dirnames: dirnames,
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getOrdered: getOrdered,
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loadPackage: loadPackage,
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ROOT: ROOT,
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sort: sort
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}
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