feat(link): Add 'convert' subcommand to aid migration to local file: …

…specifiers

commands/link/command.js

@@ -5,17 +5,27 @@
  */
 exports.command = "link";
 
-exports.describe = "Symlink together all packages which are dependencies of each other";
+exports.describe = "Symlink together all packages that are dependencies of each other";
 
-exports.builder = {
- "force-local": {
- group: "Command Options:",
- describe: "Force local",
- type: "boolean",
- default: undefined,
- },
+exports.builder = yargs => {
+ yargs.options({
+ "force-local": {
+ group: "Command Options:",
+ describe: "Force local sibling links regardless of version range match",
+ type: "boolean",
+ default: undefined,
+ },
+ });
+
+ return yargs.command(
+ "convert",
+ "Replace local sibling version ranges with relative file: specifiers",
+ () => {},
+ handler
+ );
 };
 
-exports.handler = function handler(argv) {
+exports.handler = handler;
+function handler(argv) {
  return require(".")(argv);
-};
+}

commands/link/index.js

@@ -1,5 +1,8 @@
 "use strict";
 
+const path = require("path");
+const pMap = require("p-map");
+const slash = require("slash");
 const Command = require("@lerna/command");
 const PackageGraph = require("@lerna/package-graph");
 const symlinkDependencies = require("@lerna/symlink-dependencies");
@@ -32,8 +35,48 @@ class LinkCommand extends Command {
  }
 
  execute() {
+ if (this.options._.pop() === "convert") {
+ return this.convertLinksToFileSpecs();
+ }
+
  return symlinkDependencies(this.packages, this.targetGraph, this.logger);
  }
+
+ convertLinksToFileSpecs() {
+ const rootPkg = this.project.manifest;
+ const rootDependencies = {};
+ const hoisted = {};
+ const changed = new Set();
+ const savePrefix = "file:";
+
+ for (const targetNode of this.targetGraph.values()) {
+ const resolved = { name: targetNode.name, type: "directory" };
+
+ // install root file: specifiers to avoid bootstrap
+ rootDependencies[targetNode.name] = targetNode.pkg.resolved.saveSpec;
+
+ for (const depNode of targetNode.localDependents.values()) {
+ const depVersion = slash(path.relative(depNode.pkg.location, targetNode.pkg.location));
+ // console.log("\n%s\n %j: %j", depNode.name, name, `${savePrefix}${depVersion}`);
+
+ depNode.pkg.updateLocalDependency(resolved, depVersion, savePrefix);
+ changed.add(depNode);
+ }
+
+ if (targetNode.pkg.devDependencies) {
+ // hoist _all_ devDependencies to the root
+ Object.assign(hoisted, targetNode.pkg.devDependencies);
+ targetNode.pkg.set("devDependencies", {});
+ changed.add(targetNode);
+ }
+ }
+
+ // mutate project manifest, completely overwriting existing dependencies
+ rootPkg.set("dependencies", rootDependencies);
+ rootPkg.set("devDependencies", Object.assign(rootPkg.get("devDependencies") || {}, hoisted));
+
+ return pMap(changed, node => node.pkg.serialize()).then(() => rootPkg.serialize());
+ }
 }
 
 module.exports.LinkCommand = LinkCommand;

commands/link/package.json

@@ -33,6 +33,8 @@
  "dependencies": {
  "@lerna/command": "file:../../core/command",
  "@lerna/package-graph": "file:../../core/package-graph",
- "@lerna/symlink-dependencies": "file:../../utils/symlink-dependencies"
+ "@lerna/symlink-dependencies": "file:../../utils/symlink-dependencies",
+ "p-map": "^1.2.0",
+ "slash": "^1.0.0"
  }
 }