process: refs --unhandled-rejections documentation in warning message

Refs: #20392 PR-URL: #30564 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Gus Caplan <[email protected]> Reviewed-By: Benjamin Gruenbaum <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: James M Snell <[email protected]>

Author: aduh95

lib/internal/process/promises.js

@@ -134,6 +134,9 @@ function emitUnhandledRejectionWarning(uid, reason){
 'Unhandled promise rejection. This error originated either by '+
 'throwing inside of an async function without a catch block, '+
 'or by rejecting a promise which was not handled with .catch(). '+
+'To terminate the node process on unhandled promise '+
+'rejection, use the CLI flag `--unhandled-rejections=strict` (see '+
+'https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). '+
 `(rejection id: ${uid})`
 );
 try{

test/parallel/test-promises-unhandled-proxy-rejections.js

@@ -12,7 +12,10 @@ const expectedPromiseWarning = ['Unhandled promise rejection. ' +
 'This error originated either by throwing '+
 'inside of an async function without a catch '+
 'block, or by rejecting a promise which was '+
-'not handled with .catch(). (rejection id: 1)'];
+'not handled with .catch(). To terminate the '+
+'node process on unhandled promise rejection, '+
+'use the CLI flag `--unhandled-rejections=strict` (see '+
+'https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)'];
 
 functionthrowErr(){
 thrownewError('Error from proxy');

test/parallel/test-promises-unhandled-symbol-rejections.js

@@ -13,7 +13,10 @@ const expectedPromiseWarning = ['Unhandled promise rejection. ' +
 'This error originated either by throwing '+
 'inside of an async function without a catch '+
 'block, or by rejecting a promise which was '+
-'not handled with .catch(). (rejection id: 1)'];
+'not handled with .catch(). To terminate the '+
+'node process on unhandled promise rejection, '+
+'use the CLI flag `--unhandled-rejections=strict` (see '+
+'https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)'];
 
 common.expectWarning({
 DeprecationWarning: expectedDeprecationWarning,