Name strict-mode code as where a getter-only assignment throws

CHANGELOG.md

@@ -78,8 +78,8 @@
   removed: read `session.boundAs !== undefined`. A session you wire yourself records the bind it
   accepted or had accepted with `session.bound(bindType, declaredVersion)`, which returns `err` for a
   bind type or version it cannot record. An assignment to either field does not compile in
-  TypeScript, throws a `TypeError` in an ES module or strict-mode script, and is ignored in
-  sloppy-mode CommonJS.
+  TypeScript, throws a `TypeError` in strict-mode code (every ES module, and any file under
+  `'use strict'`), and is ignored otherwise.
 
 ## 0.5.0
 

MIGRATION.md

@@ -13,8 +13,8 @@ shape is the same, connect, send, listen for delivery reports, with callbacks re
   a `session` event. It no longer calls back once per connection.
 - **The id a message is answered with goes to `sendResp({ smsId })`.** `sms.smsId` is read-only: the
   id the segments were answered with, the id `sendResp()` was given, or the generated UUID v7.
-  Assigning to it throws a `TypeError` in an ES module or strict-mode script, and is ignored in
-  sloppy-mode CommonJS.
+  Assigning to it throws a `TypeError` in strict-mode code (every ES module, and any file under
+  `'use strict'`), and is ignored otherwise.
 - **`smsIds` from `sendSms()` is `(string | undefined)[]`**, one entry per segment, positional with
   `pduObjs`, `undefined` where the SMSC took the segment without naming an id.
 - **`checkuserpass` is `authenticate`**, takes `{ password, session, systemId, systemType }` and