module: drop -u alias for --conditions

Old versions of mocha break after nodejs/node#34637.

This was a bug in mocha, but since this is a widely used module
we can expect ecosystem breakage until modules are updated to
the latest version of mocha. Drop the conflicting `-u` alias --
we can potentially bring it back once modules have been updated.

PR-URL: nodejs/node#34935
Backport-PR-URL: nodejs/node#35385
Refs: mochajs/mocha#4417
Refs: nodejs/node#34637
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Jan Krems <jan.krems@gmail.com>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Shelley Vohr <codebytere@gmail.com>

Author: richardlau

doc/api/cli.md

@@ -81,7 +81,7 @@ $ node --completion-bash > node_bash_completion
 $ source node_bash_completion
 ```
 
-### `-u`, `--conditions=condition`
+### `--conditions=condition`
 <!-- YAML
 added: REPLACEME
 -->
@@ -1181,7 +1181,7 @@ node --require "./a.js" --require "./b.js"
 
 Node.js options that are allowed are:
 <!-- node-options-node start -->
-* `--conditions`, `-u`
+* `--conditions`
 * `--diagnostic-dir`
 * `--disable-proto`
 * `--enable-fips`

doc/node.1

@@ -78,7 +78,7 @@ Aborting instead of exiting causes a core file to be generated for analysis.
 .It Fl -completion-bash
 Print source-able bash completion script for Node.js.
 .
-.It Fl u , Fl -conditions Ar string
+.It Fl -conditions Ar string
 Use custom conditional exports conditions
 .Ar string
 .

src/node_options.cc

@@ -287,7 +287,6 @@ EnvironmentOptionsParser::EnvironmentOptionsParser() {
             "additional user conditions for conditional exports and imports",
             &EnvironmentOptions::conditions,
             kAllowedInEnvironment);
-  AddAlias("-u", "--conditions");
   AddOption("--diagnostic-dir",
             "set dir for all output files"
             " (default: current working directory)",

test/es-module/test-esm-custom-exports.mjs

@@ -1,4 +1,4 @@
-// Flags: --conditions=custom-condition -u another
+// Flags: --conditions=custom-condition --conditions another
 import { mustCall } from '../common/index.mjs';
 import { strictEqual } from 'assert';
 import { requireFixture, importFixture } from '../fixtures/pkgexports.mjs';