Cleaning up lint errors, adjusting Makefile, queue.ts implementation

Author: rfsjim

Makefile

@@ -2,25 +2,51 @@
 
 CC := gcc
 CFLAGS := -Wall -Wextra -Werror -g
+
+# Typescript
+TS := $(shell find . -type f -name '*.ts' ! -path './node_modules/*')
+JS := $(TS:.ts=.js)
+
+# C
 SRC := $(shell find . -type f -name '*.c')
 OUT := $(SRC:.c=.out)
 
-.PHONY: all clean check
+.PHONY: all clean check ts c
 
-all: $(OUT)
+# Default build target
+all: c ts
+
+# C Compilation
+c: $(OUT)
 
 # Pattern rule: build file.c into file.out
 %.out: %.c
 @echo "Compiling $< -> $@"
 $(CC) $(CFLAGS) $< -o $@
 
+# TypeScript Compilation
+ts: $(JS)
+
+%.js: %.ts
+@echo "Transpiling $< -> $@"
+tsc $<
+
 check: all
-@echo "Running compiled examples..."
+@echo "Running compiled C examples..."
 @for bin in $(OUT); do \
 echo ">> $$bin"; \
 ./$$bin || echo "Error in $$bin"; \
 done
+@echo "Running compiled TypeScript examples..."
+@for js in $(JS); do \
+echo ">> $$js"; \
+node $$js || echo "Error in $$js"; \
+done
 
 clean:
 @echo "Cleaning up compiled files..."
-find . -type f \( -name '*.out' -o -name '*.exe' -o -name '*.o' \) -exec rm -f {} +
+find . -type f \( -name '*.out' -o -name '*.js' \) -exec rm -f {} +
+
+lint:
+@echo "Linting TypeScript files..."
+npx eslint '**/*.ts'

algorithms/data_structures/README.md

@@ -9,6 +9,9 @@
  - `isEmpty` - Test if queue has no elements
  - `Size` - Returns the size of the queue
 
+- [C Queue](queue.c) - Example C Implementation of Queue
+- [TS Queue](queue.ts) - Example TypeScript Implementation of Queue
+
 ## Stacks
 - **LIFO** **L**ast **I**n **F**irst **O**ut - just like a stack of papers on your desk, you add and remove from the top.
 - Operations

algorithms/data_structures/queue.ts

@@ -0,0 +1,47 @@
+/*
+ * Queue
+ * A TypeScript Class Based Queue Implementation
+ */
+
+class Queue<T>
+{
+ private items: T[] = [];
+
+ enqueue(item: T)
+ {
+ this.items.push(item);
+ }
+
+ dequeue(): T | undefined
+ {
+ return this.items.shift();
+ }
+
+ peek(): T | undefined
+ {
+ return this.items[0];
+ }
+
+ isEmpty(): boolean
+ {
+ return this.items.length === 0;
+ }
+
+ size(): number
+ {
+ return this.items.length;
+ }
+}
+
+// example usage
+
+const q = new Queue<number>();
+
+q.enqueue(10);
+q.enqueue(20);
+
+console.log(q.dequeue()); // 10
+console.log(q.peek()); // 20
+
+console.log(q.isEmpty()); // false
+console.log(q.size()); // 1

design_patterns/behavioral/observer.ts

@@ -125,7 +125,8 @@ export class AirConditionerObserver implements Observer {
  }
 
  if (scene === "movie-night") {
- 
+ // TODO: perform actions for movie-night scene
+ console.log("Movie night time");
  }
  }
 }

design_patterns/creational/factory.ts

@@ -40,4 +40,12 @@ export class ConfigurableLightFactory implements LightSceneFactory {
  }
  return new RGBLightDecorator(light, this.color);
  }
+
+ createDimmingLight(): PowerControl & BrightnessControl {
+ let dimmingLight: PowerControl & BrightnessControl = new LightBulb();
+ for (const decorate of this.decorators) {
+ dimmingLight = decorate(dimmingLight);
+ }
+ return new DimmingLightDecorator(dimmingLight);
+ }
 }

design_patterns/creational/singleton.ts

@@ -22,8 +22,6 @@
  * central point of control for the devices. 
 */
 
-import { SmartTV, AirConditioner } from "../class";
-
 type SceneName =
  | "movie-night"
  | "good-morning"

design_patterns/creational/singleton/main.ts

@@ -2,14 +2,27 @@
  * main.ts
  * Example Singleton Implementation
  * An example of how the Singleton is used once the pattern is coded
+ * AirConditioner and SmartTV
  */
 
 import { SingletonHomeHub } from '../singleton';
 import { SmartTVObserver } from '../../behavioral/observer';
+import { AirConditionerObserver } from '../../behavioral/observer';
 import { SmartTV } from '../../class';
+import { AirConditioner } from '../../class';
 
 const hub = SingletonHomeHub.getInstance();
 const tv = new SmartTVObserver();
+const ac = new AirConditionerObserver();
+
+const smartTelly = new SmartTV("Lounge");
+const smartAC = new AirConditioner("Dining");
 
 // Subscribe the TV to the "romantic" scene
-hub.subscribe("romantic", tv);
+hub.subscribe("party-time", tv);
+
+// Subscribe the A/C to the "warm-up-buttercup" scene
+hub.subscribe("movie-night", ac);
+
+smartTelly.home();
+smartAC.powerOn();

eslint.config.mjs

@@ -0,0 +1,11 @@
+import js from "@eslint/js";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+import markdown from "@eslint/markdown";
+import { defineConfig } from "eslint/config";
+
+export default defineConfig([
+ { files: ["**/*.{js,mjs,cjs,ts,mts,cts}"], plugins: { js }, extends: ["js/recommended"], languageOptions: { globals: globals.node } },
+ tseslint.configs.recommended,
+ { files: ["**/*.md"], plugins: { markdown }, language: "markdown/gfm", extends: ["markdown/recommended"] },
+]);