By default loosen the node&npm engine when bumpting 📤

src/bump-dependencies.js

@@ -21,14 +21,15 @@ const {makeError, formatEventualSuffix} = require('./core/utils');
 
 const bumpNodeVersion = async (latestNode, config) => {
   process.stdout.write(c.bold.blue(`\n\n⬆️  About to bump node version:\n`));
+  const {exact, loose} = config.node;
   const nodeVersion = _.trimCharsStart('v', latestNode.version);
   await Promise.all([
     updateServerless(nodeVersion, config.node.serverless),
     updateTravis(nodeVersion, config.node.travis),
-    updatePackageEngines(nodeVersion, latestNode.npm, config.node.package, !!config.exact),
+    updatePackageEngines(nodeVersion, latestNode.npm, config.node.package, {exact, loose}),
     updateNvmrc(nodeVersion, config.node.nvmrc),
     updateDockerfile(nodeVersion, config.node.dockerfile),
-    config.lernaMonorepo && updateLearnaPackageEngines(nodeVersion, latestNode.npm, !!config.exact)
+    config.lernaMonorepo && updateLearnaPackageEngines(nodeVersion, latestNode.npm, {exact, loose})
   ]);
 
   const messageSuffix = formatEventualSuffix(config.argv.message);

src/core/config.js

@@ -86,6 +86,10 @@ const generateDefaultConfig = () => {
       travis: fs.existsSync('.travis.yml'),
       package: true,
       serverless: fs.existsSync('serverless.yml')
+      /* optional default config
+        loose: true,
+        exact: false
+      */
     },
     dependencies: [
       {
@@ -118,6 +122,8 @@ const resolveConfig = async (config, configPath, argv) => {
     base.node.package = defaultWithPath(base.node.package, 'package.json');
     base.node.serverless = defaultWithPath(base.node.serverless, 'serverless.yml');
   }
+  base.exact = base.node.exact || argv.exact;
+  base.loose = base.node.loose !== false && argv.loose; // default logic
   base.argv = argv;
   base.forceFlag = argv.force ? '--force' : '--force-with-lease';
   base.lernaMonorepo = base.node.lerna || argv.lerna;

src/index.js

@@ -98,6 +98,17 @@ const yargs = require('yargs')
     boolean: true,
     alias: 'f'
   })
+  .option('exact', {
+    describe: 'Keep exact version',
+    boolean: true,
+    default: false
+  })
+  .option('loose', {
+    describe: `For loose version for nodes version. This will replace exisiting range constraint (^, ~ or none).
+       Use --no-loose to disable or place loose: false in config in the node section)`,
+    boolean: true,
+    default: true
+  })
   .option('config', {
     describe: 'Override update-node configuration default path',
     string: true,

src/updatees/package.js

@@ -23,18 +23,20 @@ const readPackage = packagePath => {
 
 const getSemverPrefix = _.pipe(s => s && s.match(/^(\D*)\d+/), _.at(1));
 
-const updatePackageEngines = async (node, npm, pkg, exact = false) => {
+const updatePackageEngines = async (node, npm, pkg, {exact = false, loose = true}) => {
   // TODO: maybe support forcing the choice of prefix (example, to restore loose range like >=)
-  if (_.isArray(pkg)) return pMap(pkg, p => updatePackageEngines(node, npm, p, exact));
+  if (_.isArray(pkg)) return pMap(pkg, p => updatePackageEngines(node, npm, p, {exact, loose}));
 
   if (!pkg) return;
 
+  const prefix = exact ? EXACT_PREFIX : loose ? '>=' : '';
+
   const newPackage = _.pipe(
     _.update('engines.node', existingVersion =>
-      node ? `${exact ? EXACT_PREFIX : getSemverPrefix(existingVersion)}${node}` : existingVersion
+      node ? `${prefix ? prefix : getSemverPrefix(existingVersion)}${node}` : existingVersion
     ),
     _.update('engines.npm', existingVersion =>
-      npm ? `${exact ? EXACT_PREFIX : getSemverPrefix(existingVersion)}${npm}` : existingVersion
+      npm ? `${prefix ? prefix : getSemverPrefix(existingVersion)}${npm}` : existingVersion
     )
   )(await readPackage(pkg));
 
@@ -96,7 +98,7 @@ const updateLock = async (packageManager = 'npm') => {
   ]);
 };
 
-const updateLearnaPackageEngines = async (nodeVersion, npmVersion, exact) => {
+const updateLearnaPackageEngines = async (nodeVersion, npmVersion, {exact, loose}) => {
   const lernaPackages = _.map(
     ({location}) => `${chompCurrentFolder(location)}/package.json`,
     JSON.parse(
@@ -106,7 +108,7 @@ const updateLearnaPackageEngines = async (nodeVersion, npmVersion, exact) => {
       }).all
     )
   );
-  return updatePackageEngines(nodeVersion, npmVersion, lernaPackages, exact);
+  return updatePackageEngines(nodeVersion, npmVersion, lernaPackages, {exact, loose});
 
   // note: serverlesses are supposed to be declared to level
 };