diff --git a/4mat/4mat.browser.ts b/4mat/4mat.browser.ts
index 64b930cf..8aed2694 100644
--- a/4mat/4mat.browser.ts
+++ b/4mat/4mat.browser.ts
@@ -95,9 +95,9 @@ export function assignCamelCase <T extends {}> (
   for (const property of allowed) {
     if (property in properties) {
       if (typeof property === 'string') {
-        object[Case.camel(property)] = properties[property]
+        (object as any)[Case.camel(property)] = properties[property]
       } else {
-        object[property] = properties[property]
+        (object as any)[property] = properties[property]
       }
     }
   }
diff --git a/cmds/cmds-command.ts b/cmds/cmds-command.ts
index 402ddadd..898a59c6 100644
--- a/cmds/cmds-command.ts
+++ b/cmds/cmds-command.ts
@@ -12,15 +12,17 @@ export default class Command<C extends object> extends Timed<C, Error> {
   steps: Step<C, unknown>[]
   log:   Console
 
-  constructor (parameters: Partial<Command<C>> = {}) {
+  constructor (
+    parameters: Pick<Command<C>, 'name'|'steps'> &
+      Partial<Pick<Command<C>, 'args'|'info'|'log'>>
+  ) {
     super()
-    this.name = parameters.name
-    this.args = parameters.args
-    this.info = parameters.info
+    this.name  = parameters.name
     this.steps = parameters.steps
-    this.log = parameters.log || new Console(this.name)
+    this.args  = parameters.args || ''
+    this.info  = parameters.info || ''
+    this.log   = parameters.log  || new Console(this.name)
     Object.defineProperty(this, 'log', { enumerable: false, writable: true })
-    this.args = parameters.args
   }
 
   /** Run the command with the specified arguments. */