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do_something_async(ms: number): Promise {\n return new Promise((resolve, reject) => {\n setTimeout(() => {\n resolve()\n }, ms)\n })\n}\n\nconst chan = new Channel(5)\nconst uptime = Date.now()\nconst num = 20\nasync function pub() {\n for (let i = 0; i< num; i++) {\n const label = i.toString().padStart(3, '0')\n await chan.add(label)\n await do_something_async(50)\n console.log(`[${Date.now() - uptime}] [add] [${label}] to chan.`)\n console.log(`[${Date.now() - uptime}] [total] ${chan.size()}/${chan.max_size}.`)\n }\n}\nasync function sub() {\n for (let i = 0; i< num; i++) {\n const label = await chan.get()\n await do_something_async(500)\n console.log(`[${Date.now() - uptime}] [get] [${label}] to chan.`)\n console.log(`[${Date.now() - uptime}] [total] ${chan.size()}/${chan.max_size}.`)\n }\n}\n\npub()\nsetTimeout(sub, 2000)\n```\nyou will get this log\n\n```\n[54] [add] [000] to chan.\n[65] [total] 1/5.\n[121] [add] [001] to chan.\n[121] [total] 2/5.\n[173] [add] [002] to chan.\n[173] [total] 3/5.\n[227] [add] [003] to chan.\n[227] [total] 4/5.\n[282] [add] [004] to chan.\n[282] [total] 5/5.\n[2057] [add] [005] to chan.\n[2057] [total] 5/5.\n[2507] [get] [000] to chan.\n[2507] [total] 5/5.\n[2558] [add] [006] to chan.\n[2558] [total] 5/5.\n[3009] [get] [001] to chan.\n[3009] [total] 5/5.\n[3063] [add] [007] to chan.\n[3063] [total] 5/5.\n[3513] [get] [002] to chan.\n[3513] [total] 5/5.\n[3566] [add] [008] to chan.\n[3567] [total] 5/5.\n[4017] [get] [003] to chan.\n[4017] [total] 5/5.\n[4072] [add] [009] to chan.\n[4072] [total] 5/5.\n[4522] [get] [004] to chan.\n[4522] [total] 5/5.\n[4575] [add] [010] to chan.\n[4575] [total] 5/5.\n[5024] [get] [005] to chan.\n[5024] [total] 5/5.\n[5075] [add] [011] to chan.\n[5075] [total] 5/5.\n[5525] [get] [006] to chan.\n[5525] [total] 5/5.\n[5576] [add] [012] to chan.\n[5576] [total] 5/5.\n[6030] [get] [007] to chan.\n[6030] [total] 5/5.\n[6084] [add] [013] to chan.\n[6084] [total] 5/5.\n[6532] [get] [008] to chan.\n[6532] [total] 5/5.\n[6583] [add] [014] to chan.\n[6583] [total] 5/5.\n[7035] [get] [009] to chan.\n[7035] [total] 5/5.\n[7086] [add] [015] to chan.\n[7086] [total] 5/5.\n[7538] [get] [010] to chan.\n[7539] [total] 5/5.\n[7592] [add] [016] to chan.\n[7592] [total] 5/5.\n[8039] [get] [011] to chan.\n[8040] [total] 5/5.\n[8095] [add] [017] to chan.\n[8095] [total] 5/5.\n[8543] [get] [012] to chan.\n[8543] [total] 5/5.\n[8594] [add] [018] to chan.\n[8594] [total] 5/5.\n[9043] [get] [013] to chan.\n[9043] [total] 5/5.\n[9095] [add] [019] to chan.\n[9095] [total] 5/5.\n[9546] [get] [014] to chan.\n[9546] [total] 5/5.\n[10047] [get] [015] to chan.\n[10047] [total] 4/5.\n[10549] [get] [016] to chan.\n[10549] [total] 3/5.\n[11052] [get] [017] to chan.\n[11053] [total] 2/5.\n[11557] [get] [018] to chan.\n[11557] [total] 1/5.\n[12060] [get] [019] to chan.\n[12060] [total] 0/5.\n```\n","readmeFilename":"README.md"}