fix(@angular-devkit/build-angular): add validation to fileReplacement values

fileReplacement is meant to replace compilation source files (JavaScript or TypeScript) with other compilation source files in the build. With this change we add validation to fail the build when the files have unsupported extensions.

Closes #11451

(cherry picked from commit 424af28)

Author: alan-agius4

packages/angular/cli/lib/config/schema.json

@@ -1043,10 +1043,12 @@
                   "type": "object",
                   "properties": {
                     "src": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "\\.([cm]?j|t)sx?$"
                     },
                     "replaceWith": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "\\.([cm]?j|t)sx?$"
                     }
                   },
                   "additionalProperties": false,
@@ -1059,10 +1061,12 @@
                   "type": "object",
                   "properties": {
                     "replace": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "\\.([cm]?j|t)sx?$"
                     },
                     "with": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "\\.([cm]?j|t)sx?$"
                     }
                   },
                   "additionalProperties": false,
@@ -1931,10 +1935,12 @@
                   "type": "object",
                   "properties": {
                     "src": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "\\.([cm]?j|t)sx?$"
                     },
                     "replaceWith": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "\\.([cm]?j|t)sx?$"
                     }
                   },
                   "additionalProperties": false,
@@ -1947,10 +1953,12 @@
                   "type": "object",
                   "properties": {
                     "replace": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "\\.([cm]?j|t)sx?$"
                     },
                     "with": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "\\.([cm]?j|t)sx?$"
                     }
                   },
                   "additionalProperties": false,

packages/angular_devkit/build_angular/src/browser/schema.json

@@ -428,10 +428,12 @@
           "type": "object",
           "properties": {
             "src": {
-              "type": "string"
+              "type": "string",
+              "pattern": "\\.([cm]?j|t)sx?$"
             },
             "replaceWith": {
-              "type": "string"
+              "type": "string",
+              "pattern": "\\.([cm]?j|t)sx?$"
             }
           },
           "additionalProperties": false,
@@ -444,10 +446,12 @@
           "type": "object",
           "properties": {
             "replace": {
-              "type": "string"
+              "type": "string",
+              "pattern": "\\.([cm]?j|t)sx?$"
             },
             "with": {
-              "type": "string"
+              "type": "string",
+              "pattern": "\\.([cm]?j|t)sx?$"
             }
           },
           "additionalProperties": false,

packages/angular_devkit/build_angular/src/server/schema.json

@@ -259,10 +259,12 @@
           "type": "object",
           "properties": {
             "src": {
-              "type": "string"
+              "type": "string",
+              "pattern": "\\.([cm]?j|t)sx?$"
             },
             "replaceWith": {
-              "type": "string"
+              "type": "string",
+              "pattern": "\\.([cm]?j|t)sx?$"
             }
           },
           "additionalProperties": false,
@@ -275,10 +277,12 @@
           "type": "object",
           "properties": {
             "replace": {
-              "type": "string"
+              "type": "string",
+              "pattern": "\\.([cm]?j|t)sx?$"
             },
             "with": {
-              "type": "string"
+              "type": "string",
+              "pattern": "\\.([cm]?j|t)sx?$"
             }
           },
           "additionalProperties": false,