feat: create pattern and command matcher

packages/game/src/command.ts

@@ -0,0 +1,6 @@
+export interface Command {
+  command: string
+  output: string
+  error: string
+  pwd: string
+}

packages/game/src/condition.ts

@@ -0,0 +1,36 @@
+/* eslint-disable max-classes-per-file */
+import { Command } from './command'
+import { Matcher } from './matcher'
+
+export class PatternMatcher {
+  protected matcher: RegExp | null
+  constructor(pattern?: string, args?: string) {
+    this.matcher = pattern ? new RegExp(pattern, args) : null
+  }
+
+  test(input: string): boolean {
+    if (!this.matcher) {
+      return true
+    }
+    return this.matcher.test(input)
+  }
+}
+
+export class CommandMatcher extends PatternMatcher implements Matcher {
+  match(command: Partial<Command>): boolean {
+    return !!command.command && this.test(command.command)
+  }
+}
+
+export class ErrorMatcher extends PatternMatcher implements Matcher {
+  match(command: Partial<Command>): boolean {
+    if (!this.matcher) {
+      return command.error === ''
+    }
+    return !!command.error && this.test(command.error)
+  }
+}
+
+export class Condition {
+  private matchers: Matcher[] = []
+}

packages/game/src/matcher.ts

@@ -0,0 +1,5 @@
+import { Command } from './command'
+
+export interface Matcher {
+  match(command: Partial<Command>): boolean
+}