fix: process optional deps during manifest update

lib/createInlinePluginCreator.js

@@ -3,6 +3,7 @@ const debug = require("debug")("msr:inlinePlugin");
 const getCommitsFiltered = require("./getCommitsFiltered");
 const { getManifest, getIndent } = require("./getManifest");
 const hasChangedDeep = require("./hasChangedDeep");
+const { get } = require("lodash");
 
 /**
  * Create an inline plugin creator for a multirelease.
@@ -32,6 +33,11 @@ function createInlinePluginCreator(packages, multiContext, synchronizer, flags)
 		// Get and parse manifest file contents.
 		const manifest = getManifest(path);
 		const indent = getIndent(path);
+		const updateDependency = (scope, name, version) => {
+			if (get(manifest, `${scope}.${name}`)) {
+				manifest[scope][name] = version;
+			}
+		};
 
 		// Loop through localDeps to update dependencies/devDependencies/peerDependencies in manifest.
 		pkg._localDeps.forEach((d) => {
@@ -43,9 +49,10 @@ function createInlinePluginCreator(packages, multiContext, synchronizer, flags)
 				throw Error(`Cannot release because dependency ${d.name} has not been released`);
 
 			// Update version of dependency in manifest.
-			if (manifest.dependencies.hasOwnProperty(d.name)) manifest.dependencies[d.name] = release.version;
-			if (manifest.devDependencies.hasOwnProperty(d.name)) manifest.devDependencies[d.name] = release.version;
-			if (manifest.peerDependencies.hasOwnProperty(d.name)) manifest.peerDependencies[d.name] = release.version;
+			updateDependency("dependencies", d.name, release.version);
+			updateDependency("devDependencies", d.name, release.version);
+			updateDependency("peerDependencies", d.name, release.version);
+			updateDependency("optionalDependencies", d.name, release.version);
 		});
 
 		// Write package.json back out.

lib/getManifest.js

@@ -78,8 +78,7 @@ function getManifest(path) {
 
 	// Check dependencies.
 	const checkDeps = (scope) => {
-		if (!manifest.hasOwnProperty(scope)) manifest[scope] = {};
-		else if (typeof manifest[scope] !== "object")
+		if (manifest.hasOwnProperty(scope) && typeof manifest[scope] !== "object")
 			throw new SyntaxError(`Package ${scope} must be object: "${path}"`);
 	};
 

lib/multiSemanticRelease.js

@@ -120,11 +120,12 @@ async function getPackage(path, { options: globalOptions, env, cwd, stdout, stde
 	const name = manifest.name;
 
 	// Combine list of all dependency names.
-	const deps = [
-		...Object.keys(manifest.dependencies),
-		...Object.keys(manifest.devDependencies),
-		...Object.keys(manifest.peerDependencies),
-	];
+	const deps = Object.keys({
+		...manifest.dependencies,
+		...manifest.devDependencies,
+		...manifest.peerDependencies,
+		...manifest.optionalDependencies,
+	});
 
 	// Load the package-specific options.
 	const { options: pkgOptions } = await getConfig(dir);