//寮傛鍑芥暟绀轰緥fn(){letvalue=awaitnewPromise((resolve,reject)=>{reject('failure');});console.log('鍋氱偣浠€涔?..');}fn()澶嶅埗浠ｇ爜瀵艰嚧娴忚鍣ㄦ姤閿?anuncaughterror鍦ㄥ紑鍙戣繃绋嬩腑锛屼负浜嗕繚璇佺郴缁熺殑鍋ュ．鎬э紝鎴栬€呮崟鎹夊紓姝ラ敊璇紝闇€瑕佺粡甯稿湪async鍑芥暟閬垮厤浜嗕笂闈㈢殑渚嬪瓙锛屾垜姣旇緝鎳掞紝涓嶆兂涓€涓€娣诲姞銆傛噿鎯拌鎴戜滑杩涙馃槀鎺ヤ笅鏉ユ墜鍐欎竴涓猙abel鎻掍欢缁欐墍鏈塧sync鍑芥暟娣诲姞涓€涓猼ry/catchbabel鎻掍欢銆傚師浠ｇ爜锛歛syncfunctionfn(){awaitnewPromise((resolve,reject)=>reject('error'));绛夊緟鏂扮殑鎵胯锛堬紙瑙ｅ喅锛?>瑙ｅ喅锛?锛夛級锛沜onsole.log('dosomething...');}fn();澶嶅埗鎻掍欢杞崲鍚庣殑浠ｇ爜锛歛syncfunctionfn(){try{awaitnewPromise((resolve,reject)=>reject('error'));绛夊緟鏂扮殑鎵胯(瑙ｅ喅=>瑙ｅ喅(1));console.log('dosomething...');}catch(e){console.log("\nfilePath:E:\\myapp\\src\\main.js\nfuncName:fn\nError:",e);}}fn();澶嶅埗浠ｇ爜鎵撳嵃鐨勯敊璇俊鎭細閫氳繃璇︾粏鐨勯敊璇俊鎭府鍔╂垜浠揩閫熸壘鍒扮洰鏍囨枃浠跺拰鍏蜂綋鐨勯敊璇柟娉曪紝鏂逛究瀹氫綅闂銆傞亶鍘嗘壘鍒颁唬鐮佷腑鐨刟wait鍏抽敭瀛?锛夋壘鍒癮wait鑺傜偣鍚庯紝浠庣埗璺緞鎵惧埌澹版槑鐨刟sync鍑芥暟锛屽緱鍒板嚱鏁颁綋锛堝嚱鏁颁腑鍖呭惈鐨勪唬鐮侊級3锛夊垱寤簍ry/catch璇彞锛屽苟灏嗗師鏉ョ殑寮傛涓讳綋鏇挎崲涓?)鏈€鍚庯紝鐢ㄥ垱寤虹殑try/catch璇彞鏇挎崲寮傛涓讳綋銆俠abel鐨勬牳蹇冿細AST鍏堣璇碅ST杩欎釜甯呭摜馃锛屼笉鐒跺悗闈㈢殑寮€鍙戣繃绋嬪氨娌℃硶杩涜浜嗐€侫ST鏄唬鐮佺殑鏍戝舰缁撴瀯锛岀敓鎴愮殑AST鍒嗕负璇嶆硶鍒嗘瀽鍜屽彞娉曞垎鏋愪袱涓樁娈佃瘝娉曞垎鏋愰樁娈靛皢浠ｇ爜浠ュ瓧绗︿覆鐨勫舰寮忚浆鍖栦负token銆俆oken鍙互鐪嬪仛鏄娉曠墖娈电殑骞抽潰鏁扮粍锛屽畠鎻忚堪浜嗘暣涓唬鐮佷腑鐨勪唬鐮佺墖娈点€傝褰曠殑浣嶇疆鍜屽綋鍓嶅€肩殑涓€浜涗俊鎭紝姣斿璁゛=1锛屽搴旂殑AST灏辨槸杩欐牱鐨勮娉曞垎鏋愯娉曞垎鏋愰樁娈典細鎶妕oken杞崲鎴怉ST鐨勫舰寮忥紝杩欎釜闃舵浼氱敤鍒拌繖浜涗俊鎭痶oken灏嗗畠浠浆鎹㈡垚涓€涓狝ST琛ㄨ揪寮忕粨鏋勶紝浣跨敤type灞炴€ц褰曞綋鍓嶇被鍨嬨€傛瘮濡俵et琛ㄧず鍙橀噺澹版槑鐨勫叧閿瓧锛岄偅涔堝畠鐨勭被鍨嬪氨鏄疺ariableDeclaration锛宎=1浼氫綔涓簂et鐨勫０鏄庤鏄庯紝瀹冪殑绫诲瀷灏辨槸VariableDeclarator銆侫ST鍦ㄧ嚎鏌ョ湅宸ュ叿锛欰STexplorer渚嬪馃尠锛屽姞娣卞AST鐨勭悊瑙unctiondemo(n){returnn*n;}copycodeintoASTstructure{"type":"Program",//鏁翠釜bodycode"body":[{"type":"FunctionDeclaration",//鍑芥暟鐨勭被鍨嬬О涓哄嚱鏁板０鏄庯紱"id":{//id鏄嚱鏁板０鏄庣殑id"type":"Identifier",//鏍囪瘑绗︾被鍨?name":"demo"//鏍囪瘑绗︽湁鍚嶅瓧},"expression":false,"generator":false,"async":false,//琛ㄧず鏄惁鏄紓姝ュ嚱鏁?params":[//鍚岀骇鍑芥暟鐨勫弬鏁皗"type":"Identifier",//鍙傛暟绫诲瀷涔熸槸Identifier"name":"n"}],"body":{//鏁翠釜鍑芥暟浣撳唴瀹圭殑鏍煎紡鍛堢幇涓€涓爲鐘舵牸寮?type":"BlockStatement",//鏁翠釜鍑芥暟浣撳唴瀹规槸涓€涓潡浠ｇ爜鍧梩ype"body":[{"type":"ReturnStatement",//杩斿洖绫诲瀷"argument":{"type":"BinaryExpression",//BinaryExpression浜岃繘鍒惰〃杈惧紡type"start":30,"end":35,"left":{//鍒嗕负宸︾粨鏋勫拰鍙崇粨鏋?type":"Identifier","name":"n"},"operator":"*",//灞炰簬杩愮畻绗?right":{"type":"Identifier","name":"n"}}}]}}],"sourceType":"module"}浣滆€咃細Haikuo_SkyLink:https://juejin.cn/post/715543...鏉ユ簮锛氱█鍦熺熆鍧楃増鏉冨綊浣滆€呮墍鏈夈€傚闇€鍟嗕笟杞浇锛岃鑱旂郴浣滆€呰幏寰楁巿鏉冦€傞潪鍟嗕笟杞浇璇锋敞鏄庡嚭澶勩€?/p>
