feat: allow theme file to be configurable

src/config/config.ts

@@ -332,7 +332,7 @@ export class Config implements IConfig {
     this.npmRegistry = this.scopedEnvVar('NPM_REGISTRY') || this.pjson.oclif.npmRegistry
 
     if (!this.scopedEnvVarTrue('DISABLE_THEME')) {
-      const {theme} = await this.loadThemes()
+      const {theme} = await this.loadTheme()
       this.theme = theme
     }
 
@@ -401,16 +401,17 @@ export class Config implements IConfig {
     }
   }
 
-  public async loadThemes(): Promise<{
+  public async loadTheme(): Promise<{
     file: string
     theme: Theme | undefined
   }> {
-    const file = resolve(this.configDir, 'theme.json')
-    const themes = await safeReadJson<Record<string, string>>(file)
-    const theme = themes ? parseTheme(themes) : undefined
+    const file = this.pjson.oclif.theme
+      ? resolve(this.root, this.pjson.oclif.theme)
+      : resolve(this.configDir, 'theme.json')
+    const themeRaw = await safeReadJson<Record<string, string>>(file)
     return {
       file,
-      theme,
+      theme: themeRaw ? parseTheme(themeRaw) : undefined,
     }
   }
 

src/interfaces/pjson.ts

@@ -43,15 +43,11 @@ export namespace PJSON {
         identifier?: string
         sign?: string
       }
-      windows?: {
-        homepage?: string
-        keypath?: string
-        name?: string
-      }
       plugins?: string[]
       repositoryPrefix?: string
       schema?: number
       state?: 'beta' | 'deprecated' | string
+      theme?: string
       topicSeparator?: ' ' | ':'
       topics?: {
         [k: string]: {
@@ -72,6 +68,11 @@ export namespace PJSON {
         }
         s3: S3
       }
+      windows?: {
+        homepage?: string
+        keypath?: string
+        name?: string
+      }
     }
     version: string
   }