fix: legacy auth tokens

Add legacy `_auth` token to flatOptions in order to support it when
reaching out to registries.

Fixes: #2008

Credit: @ruyadorno
Close: #2153
Reviewed-by: @isaacs

Author: ruyadorno

lib/utils/config.js

@@ -52,6 +52,7 @@ const defaults = {
   'always-auth': false,
   audit: true,
   'audit-level': null,
+  _auth: null,
   'auth-type': 'legacy',
   before: null,
   'bin-links': true,
@@ -191,6 +192,7 @@ const types = {
   all: Boolean,
   'allow-same-version': Boolean,
   also: [null, 'dev', 'development'],
+  _auth: [null, String],
   'always-auth': Boolean,
   audit: Boolean,
   'audit-level': ['low', 'moderate', 'high', 'critical', 'none', null],

lib/utils/flat-options.js

@@ -50,6 +50,7 @@ const flatten = obj => ({
   alwaysAuth: obj['always-auth'],
   audit: obj.audit,
   auditLevel: obj['audit-level'],
+  _auth: obj._auth,
   authType: obj['auth-type'],
   ssoType: obj['sso-type'],
   ssoPollFrequency: obj['sso-poll-frequency'],

tap-snapshots/test-lib-utils-config.js-TAP.test.js

@@ -8,6 +8,7 @@
 exports[`test/lib/utils/config.js TAP no process.umask() method > must match snapshot 1`] = `
 Object {
   "defaults": Object {
+    "_auth": null,
     "access": null,
     "all": false,
     "allow-same-version": false,
@@ -267,6 +268,10 @@ Object {
     ],
   },
   "types": Object {
+    "_auth": Array [
+      null,
+      "{String TYPE}",
+    ],
     "access": Array [
       null,
       "restricted",
@@ -537,6 +542,7 @@ Object {
 exports[`test/lib/utils/config.js TAP no working network interfaces, on windows > must match snapshot 1`] = `
 Object {
   "defaults": Object {
+    "_auth": null,
     "access": null,
     "all": false,
     "allow-same-version": false,
@@ -796,6 +802,10 @@ Object {
     ],
   },
   "types": Object {
+    "_auth": Array [
+      null,
+      "{String TYPE}",
+    ],
     "access": Array [
       null,
       "restricted",
@@ -1066,6 +1076,7 @@ Object {
 exports[`test/lib/utils/config.js TAP working network interfaces, not windows > must match snapshot 1`] = `
 Object {
   "defaults": Object {
+    "_auth": null,
     "access": null,
     "all": false,
     "allow-same-version": false,
@@ -1325,6 +1336,10 @@ Object {
     ],
   },
   "types": Object {
+    "_auth": Array [
+      null,
+      "{String TYPE}",
+    ],
     "access": Array [
       null,
       "restricted",

tap-snapshots/test-lib-utils-flat-options.js-TAP.test.js

@@ -7,6 +7,7 @@
 'use strict'
 exports[`test/lib/utils/flat-options.js TAP basic > flat options 1`] = `
 Object {
+  "_auth": undefined,
   "@scope:registry": "@scope:registry",
   "//nerf.dart:_authToken": "//nerf.dart:_authToken",
   "access": "access",

test/lib/utils/flat-options.js

@@ -291,6 +291,18 @@ t.test('various default values and falsey fallbacks', t => {
   t.end()
 })
 
+t.test('legacy _auth token', t => {
+  const npm = new Mocknpm({
+    _auth: 'asdfasdf',
+  })
+  t.strictSame(
+    flatOptions(npm)._auth,
+    'asdfasdf',
+    'should set legacy _auth token',
+  )
+  t.end()
+})
+
 t.test('save-type', t => {
   const base = {
     'save-optional': false,