How to use MakeHandledPromise method of js Package

Best K6 code snippet using js.MakeHandledPromise

client.go

Source:client.go

1package redis2import (3	"fmt"4	"time"5	"github.com/dop251/goja"6	"github.com/go-redis/redis/v8"7	"go.k6.io/k6/js/common"8	"go.k6.io/k6/js/modules"9)10// Client represents the Client constructor (i.e. `new redis.Client()`) and11// returns a new Redis client object.12type Client struct {13	vu           modules.VU14	redisOptions *redis.UniversalOptions15	redisClient  redis.UniversalClient16}17// Set the given key with the given value.18func (c *Client) Set(key string, value interface{}, expiration int) *goja.Promise {19	promise, resolve, reject := c.makeHandledPromise()20	if err := c.connect(); err != nil {21		reject(err)22		return promise23	}24	if err := c.isSupportedType(1, value); err != nil {25		reject(err)26		return promise27	}28	go func() {29		result, err := c.redisClient.Set(c.vu.Context(), key, value, time.Duration(expiration)*time.Second).Result()30		if err != nil {31			reject(err)32			return33		}34		resolve(result)35	}()36	return promise37}38// Get returns the value for the given key.39func (c *Client) Get(key string) *goja.Promise {40	promise, resolve, reject := c.makeHandledPromise()41	if err := c.connect(); err != nil {42		reject(err)43		return promise44	}45	go func() {46		value, err := c.redisClient.Get(c.vu.Context(), key).Result()47		if err != nil {48			reject(err)49			return50		}51		resolve(value)52	}()53	return promise54}55// GetSet sets the value of key to value and returns the old value stored56func (c *Client) GetSet(key string, value interface{}) *goja.Promise {57	promise, resolve, reject := c.makeHandledPromise()58	if err := c.connect(); err != nil {59		reject(err)60		return promise61	}62	if err := c.isSupportedType(1, value); err != nil {63		reject(err)64		return promise65	}66	go func() {67		oldValue, err := c.redisClient.GetSet(c.vu.Context(), key, value).Result()68		if err != nil {69			reject(err)70			return71		}72		resolve(oldValue)73	}()74	return promise75}76// Del removes the specified keys. A key is ignored if it does not exist77func (c *Client) Del(keys ...string) *goja.Promise {78	promise, resolve, reject := c.makeHandledPromise()79	if err := c.connect(); err != nil {80		reject(err)81		return promise82	}83	go func() {84		n, err := c.redisClient.Del(c.vu.Context(), keys...).Result()85		if err != nil {86			reject(err)87			return88		}89		resolve(n)90	}()91	return promise92}93// GetDel gets the value of key and deletes the key.94func (c *Client) GetDel(key string) *goja.Promise {95	promise, resolve, reject := c.makeHandledPromise()96	if err := c.connect(); err != nil {97		reject(err)98		return promise99	}100	go func() {101		value, err := c.redisClient.GetDel(c.vu.Context(), key).Result()102		if err != nil {103			reject(err)104			return105		}106		resolve(value)107	}()108	return promise109}110// Exists returns the number of key arguments that exist.111// Note that if the same existing key is mentioned in the argument112// multiple times, it will be counted multiple times.113func (c *Client) Exists(keys ...string) *goja.Promise {114	promise, resolve, reject := c.makeHandledPromise()115	if err := c.connect(); err != nil {116		reject(err)117		return promise118	}119	go func() {120		n, err := c.redisClient.Exists(c.vu.Context(), keys...).Result()121		if err != nil {122			reject(err)123			return124		}125		resolve(n)126	}()127	return promise128}129// Incr increments the number stored at `key` by one. If the key does130// not exist, it is set to zero before performing the operation. An131// error is returned if the key contains a value of the wrong type, or132// contains a string that cannot be represented as an integer.133func (c *Client) Incr(key string) *goja.Promise {134	promise, resolve, reject := c.makeHandledPromise()135	if err := c.connect(); err != nil {136		reject(err)137		return promise138	}139	go func() {140		newValue, err := c.redisClient.Incr(c.vu.Context(), key).Result()141		if err != nil {142			reject(err)143			return144		}145		resolve(newValue)146	}()147	return promise148}149// IncrBy increments the number stored at `key` by `increment`. If the key does150// not exist, it is set to zero before performing the operation. An151// error is returned if the key contains a value of the wrong type, or152// contains a string that cannot be represented as an integer.153func (c *Client) IncrBy(key string, increment int64) *goja.Promise {154	promise, resolve, reject := c.makeHandledPromise()155	if err := c.connect(); err != nil {156		reject(err)157		return promise158	}159	go func() {160		newValue, err := c.redisClient.IncrBy(c.vu.Context(), key, increment).Result()161		if err != nil {162			reject(err)163			return164		}165		resolve(newValue)166	}()167	return promise168}169// Decr decrements the number stored at `key` by one. If the key does170// not exist, it is set to zero before performing the operation. An171// error is returned if the key contains a value of the wrong type, or172// contains a string that cannot be represented as an integer.173func (c *Client) Decr(key string) *goja.Promise {174	promise, resolve, reject := c.makeHandledPromise()175	if err := c.connect(); err != nil {176		reject(err)177		return promise178	}179	go func() {180		newValue, err := c.redisClient.Decr(c.vu.Context(), key).Result()181		if err != nil {182			reject(err)183			return184		}185		resolve(newValue)186	}()187	return promise188}189// DecrBy decrements the number stored at `key` by `decrement`. If the key does190// not exist, it is set to zero before performing the operation. An191// error is returned if the key contains a value of the wrong type, or192// contains a string that cannot be represented as an integer.193func (c *Client) DecrBy(key string, decrement int64) *goja.Promise {194	promise, resolve, reject := c.makeHandledPromise()195	if err := c.connect(); err != nil {196		reject(err)197		return promise198	}199	go func() {200		newValue, err := c.redisClient.DecrBy(c.vu.Context(), key, decrement).Result()201		if err != nil {202			reject(err)203			return204		}205		resolve(newValue)206	}()207	return promise208}209// RandomKey returns a random key.210func (c *Client) RandomKey() *goja.Promise {211	promise, resolve, reject := c.makeHandledPromise()212	if err := c.connect(); err != nil {213		reject(err)214		return promise215	}216	go func() {217		key, err := c.redisClient.RandomKey(c.vu.Context()).Result()218		if err != nil {219			reject(err)220			return221		}222		resolve(key)223	}()224	return promise225}226// Mget returns the values associated with the specified keys.227func (c *Client) Mget(keys ...string) *goja.Promise {228	promise, resolve, reject := c.makeHandledPromise()229	if err := c.connect(); err != nil {230		reject(err)231		return promise232	}233	go func() {234		values, err := c.redisClient.MGet(c.vu.Context(), keys...).Result()235		if err != nil {236			reject(err)237			return238		}239		resolve(values)240	}()241	return promise242}243// Expire sets a timeout on key, after which the key will automatically244// be deleted.245// Note that calling Expire with a non-positive timeout will result in246// the key being deleted rather than expired.247func (c *Client) Expire(key string, seconds int) *goja.Promise {248	promise, resolve, reject := c.makeHandledPromise()249	if err := c.connect(); err != nil {250		reject(err)251		return promise252	}253	go func() {254		ok, err := c.redisClient.Expire(c.vu.Context(), key, time.Duration(seconds)*time.Second).Result()255		if err != nil {256			reject(err)257			return258		}259		resolve(ok)260	}()261	return promise262}263// Ttl returns the remaining time to live of a key that has a timeout.264// nolint:stylecheck,revive265func (c *Client) Ttl(key string) *goja.Promise {266	promise, resolve, reject := c.makeHandledPromise()267	if err := c.connect(); err != nil {268		reject(err)269		return promise270	}271	go func() {272		duration, err := c.redisClient.TTL(c.vu.Context(), key).Result()273		if err != nil {274			reject(err)275			return276		}277		resolve(duration.Seconds())278	}()279	return promise280}281// Persist removes the existing timeout on key.282func (c *Client) Persist(key string) *goja.Promise {283	promise, resolve, reject := c.makeHandledPromise()284	if err := c.connect(); err != nil {285		reject(err)286		return promise287	}288	go func() {289		ok, err := c.redisClient.Persist(c.vu.Context(), key).Result()290		if err != nil {291			reject(err)292			return293		}294		resolve(ok)295	}()296	return promise297}298// Lpush inserts all the specified values at the head of the list stored299// at `key`. If `key` does not exist, it is created as empty list before300// performing the push operations. When `key` holds a value that is not301// a list, and error is returned.302func (c *Client) Lpush(key string, values ...interface{}) *goja.Promise {303	promise, resolve, reject := c.makeHandledPromise()304	if err := c.connect(); err != nil {305		reject(err)306		return promise307	}308	if err := c.isSupportedType(1, values...); err != nil {309		reject(err)310		return promise311	}312	go func() {313		listLength, err := c.redisClient.LPush(c.vu.Context(), key, values...).Result()314		if err != nil {315			reject(err)316			return317		}318		resolve(listLength)319	}()320	return promise321}322// Rpush inserts all the specified values at the tail of the list stored323// at `key`. If `key` does not exist, it is created as empty list before324// performing the push operations.325func (c *Client) Rpush(key string, values ...interface{}) *goja.Promise {326	promise, resolve, reject := c.makeHandledPromise()327	if err := c.connect(); err != nil {328		reject(err)329		return promise330	}331	if err := c.isSupportedType(1, values...); err != nil {332		reject(err)333		return promise334	}335	go func() {336		listLength, err := c.redisClient.RPush(c.vu.Context(), key, values...).Result()337		if err != nil {338			reject(err)339			return340		}341		resolve(listLength)342	}()343	return promise344}345// Lpop removes and returns the first element of the list stored at `key`.346func (c *Client) Lpop(key string) *goja.Promise {347	promise, resolve, reject := c.makeHandledPromise()348	if err := c.connect(); err != nil {349		reject(err)350		return promise351	}352	go func() {353		value, err := c.redisClient.LPop(c.vu.Context(), key).Result()354		if err != nil {355			reject(err)356			return357		}358		resolve(value)359	}()360	return promise361}362// Rpop removes and returns the last element of the list stored at `key`.363func (c *Client) Rpop(key string) *goja.Promise {364	promise, resolve, reject := c.makeHandledPromise()365	if err := c.connect(); err != nil {366		reject(err)367		return promise368	}369	go func() {370		value, err := c.redisClient.RPop(c.vu.Context(), key).Result()371		if err != nil {372			reject(err)373			return374		}375		resolve(value)376	}()377	return promise378}379// Lrange returns the specified elements of the list stored at `key`. The380// offsets start and stop are zero-based indexes. These offsets can be381// negative numbers, where they indicate offsets starting at the end of382// the list.383func (c *Client) Lrange(key string, start, stop int64) *goja.Promise {384	promise, resolve, reject := c.makeHandledPromise()385	if err := c.connect(); err != nil {386		reject(err)387		return promise388	}389	go func() {390		values, err := c.redisClient.LRange(c.vu.Context(), key, start, stop).Result()391		if err != nil {392			reject(err)393			return394		}395		resolve(values)396	}()397	return promise398}399// Lindex returns the specified element of the list stored at `key`.400// The index is zero-based. Negative indices can be used to designate401// elements starting at the tail of the list.402func (c *Client) Lindex(key string, index int64) *goja.Promise {403	promise, resolve, reject := c.makeHandledPromise()404	if err := c.connect(); err != nil {405		reject(err)406		return promise407	}408	go func() {409		value, err := c.redisClient.LIndex(c.vu.Context(), key, index).Result()410		if err != nil {411			reject(err)412			return413		}414		resolve(value)415	}()416	return promise417}418// Lset sets the list element at `index` to `element`.419func (c *Client) Lset(key string, index int64, element string) *goja.Promise {420	promise, resolve, reject := c.makeHandledPromise()421	if err := c.connect(); err != nil {422		reject(err)423		return promise424	}425	go func() {426		value, err := c.redisClient.LSet(c.vu.Context(), key, index, element).Result()427		if err != nil {428			reject(err)429			return430		}431		resolve(value)432	}()433	return promise434}435// Lrem removes the first `count` occurrences of `value` from the list stored436// at `key`. If `count` is positive, elements are removed from the beginning of the list.437// If `count` is negative, elements are removed from the end of the list.438// If `count` is zero, all elements matching `value` are removed.439func (c *Client) Lrem(key string, count int64, value string) *goja.Promise {440	promise, resolve, reject := c.makeHandledPromise()441	if err := c.connect(); err != nil {442		reject(err)443		return promise444	}445	go func() {446		n, err := c.redisClient.LRem(c.vu.Context(), key, count, value).Result()447		if err != nil {448			reject(err)449			return450		}451		resolve(n)452	}()453	return promise454}455// Llen returns the length of the list stored at `key`. If `key`456// does not exist, it is interpreted as an empty list and 0 is returned.457func (c *Client) Llen(key string) *goja.Promise {458	promise, resolve, reject := c.makeHandledPromise()459	if err := c.connect(); err != nil {460		reject(err)461		return promise462	}463	go func() {464		length, err := c.redisClient.LLen(c.vu.Context(), key).Result()465		if err != nil {466			reject(err)467			return468		}469		resolve(length)470	}()471	return promise472}473// Hset sets the specified field in the hash stored at `key` to `value`.474// If the `key` does not exist, a new key holding a hash is created.475// If `field` already exists in the hash, it is overwritten.476func (c *Client) Hset(key string, field string, value interface{}) *goja.Promise {477	promise, resolve, reject := c.makeHandledPromise()478	if err := c.connect(); err != nil {479		reject(err)480		return promise481	}482	if err := c.isSupportedType(2, value); err != nil {483		reject(err)484		return promise485	}486	go func() {487		n, err := c.redisClient.HSet(c.vu.Context(), key, field, value).Result()488		if err != nil {489			reject(err)490			return491		}492		resolve(n)493	}()494	return promise495}496// Hsetnx sets the specified field in the hash stored at `key` to `value`,497// only if `field` does not yet exist. If `key` does not exist, a new key498// holding a hash is created. If `field` already exists, this operation499// has no effect.500func (c *Client) Hsetnx(key, field, value string) *goja.Promise {501	promise, resolve, reject := c.makeHandledPromise()502	if err := c.connect(); err != nil {503		reject(err)504		return promise505	}506	go func() {507		ok, err := c.redisClient.HSetNX(c.vu.Context(), key, field, value).Result()508		if err != nil {509			reject(err)510			return511		}512		resolve(ok)513	}()514	return promise515}516// Hget returns the value associated with `field` in the hash stored at `key`.517func (c *Client) Hget(key, field string) *goja.Promise {518	promise, resolve, reject := c.makeHandledPromise()519	if err := c.connect(); err != nil {520		reject(err)521		return promise522	}523	go func() {524		value, err := c.redisClient.HGet(c.vu.Context(), key, field).Result()525		if err != nil {526			reject(err)527			return528		}529		resolve(value)530	}()531	return promise532}533// Hdel deletes the specified fields from the hash stored at `key`.534func (c *Client) Hdel(key string, fields ...string) *goja.Promise {535	promise, resolve, reject := c.makeHandledPromise()536	if err := c.connect(); err != nil {537		reject(err)538		return promise539	}540	go func() {541		n, err := c.redisClient.HDel(c.vu.Context(), key, fields...).Result()542		if err != nil {543			reject(err)544			return545		}546		resolve(n)547	}()548	return promise549}550// Hgetall returns all fields and values of the hash stored at `key`.551func (c *Client) Hgetall(key string) *goja.Promise {552	promise, resolve, reject := c.makeHandledPromise()553	if err := c.connect(); err != nil {554		reject(err)555		return promise556	}557	go func() {558		hashMap, err := c.redisClient.HGetAll(c.vu.Context(), key).Result()559		if err != nil {560			reject(err)561			return562		}563		resolve(hashMap)564	}()565	return promise566}567// Hkeys returns all fields of the hash stored at `key`.568func (c *Client) Hkeys(key string) *goja.Promise {569	promise, resolve, reject := c.makeHandledPromise()570	if err := c.connect(); err != nil {571		reject(err)572		return promise573	}574	go func() {575		keys, err := c.redisClient.HKeys(c.vu.Context(), key).Result()576		if err != nil {577			reject(err)578			return579		}580		resolve(keys)581	}()582	return promise583}584// Hvals returns all values of the hash stored at `key`.585func (c *Client) Hvals(key string) *goja.Promise {586	promise, resolve, reject := c.makeHandledPromise()587	if err := c.connect(); err != nil {588		reject(err)589		return promise590	}591	go func() {592		values, err := c.redisClient.HVals(c.vu.Context(), key).Result()593		if err != nil {594			reject(err)595			return596		}597		resolve(values)598	}()599	return promise600}601// Hlen returns the number of fields in the hash stored at `key`.602func (c *Client) Hlen(key string) *goja.Promise {603	promise, resolve, reject := c.makeHandledPromise()604	if err := c.connect(); err != nil {605		reject(err)606		return promise607	}608	go func() {609		n, err := c.redisClient.HLen(c.vu.Context(), key).Result()610		if err != nil {611			reject(err)612			return613		}614		resolve(n)615	}()616	return promise617}618// Hincrby increments the integer value of `field` in the hash stored at `key`619// by `increment`. If `key` does not exist, a new key holding a hash is created.620// If `field` does not exist the value is set to 0 before the operation is621// set to 0 before the operation is performed.622func (c *Client) Hincrby(key, field string, increment int64) *goja.Promise {623	promise, resolve, reject := c.makeHandledPromise()624	if err := c.connect(); err != nil {625		reject(err)626		return promise627	}628	go func() {629		newValue, err := c.redisClient.HIncrBy(c.vu.Context(), key, field, increment).Result()630		if err != nil {631			reject(err)632			return633		}634		resolve(newValue)635	}()636	return promise637}638// Sadd adds the specified members to the set stored at key.639// Specified members that are already a member of this set are ignored.640// If key does not exist, a new set is created before adding the specified members.641func (c *Client) Sadd(key string, members ...interface{}) *goja.Promise {642	promise, resolve, reject := c.makeHandledPromise()643	if err := c.connect(); err != nil {644		reject(err)645		return promise646	}647	if err := c.isSupportedType(1, members...); err != nil {648		reject(err)649		return promise650	}651	go func() {652		n, err := c.redisClient.SAdd(c.vu.Context(), key, members...).Result()653		if err != nil {654			reject(err)655			return656		}657		resolve(n)658	}()659	return promise660}661// Srem removes the specified members from the set stored at key.662// Specified members that are not a member of this set are ignored.663// If key does not exist, it is treated as an empty set and this command returns 0.664func (c *Client) Srem(key string, members ...interface{}) *goja.Promise {665	promise, resolve, reject := c.makeHandledPromise()666	if err := c.connect(); err != nil {667		reject(err)668		return promise669	}670	if err := c.isSupportedType(1, members...); err != nil {671		reject(err)672		return promise673	}674	go func() {675		n, err := c.redisClient.SRem(c.vu.Context(), key, members...).Result()676		if err != nil {677			reject(err)678			return679		}680		resolve(n)681	}()682	return promise683}684// Sismember returns if member is a member of the set stored at key.685func (c *Client) Sismember(key string, member interface{}) *goja.Promise {686	promise, resolve, reject := c.makeHandledPromise()687	if err := c.connect(); err != nil {688		reject(err)689		return promise690	}691	if err := c.isSupportedType(1, member); err != nil {692		reject(err)693		return promise694	}695	go func() {696		ok, err := c.redisClient.SIsMember(c.vu.Context(), key, member).Result()697		if err != nil {698			reject(err)699			return700		}701		resolve(ok)702	}()703	return promise704}705// Smembers returns all members of the set stored at key.706func (c *Client) Smembers(key string) *goja.Promise {707	promise, resolve, reject := c.makeHandledPromise()708	if err := c.connect(); err != nil {709		reject(err)710		return promise711	}712	go func() {713		members, err := c.redisClient.SMembers(c.vu.Context(), key).Result()714		if err != nil {715			reject(err)716			return717		}718		resolve(members)719	}()720	return promise721}722// Srandmember returns a random element from the set value stored at key.723func (c *Client) Srandmember(key string) *goja.Promise {724	promise, resolve, reject := c.makeHandledPromise()725	if err := c.connect(); err != nil {726		reject(err)727		return promise728	}729	go func() {730		element, err := c.redisClient.SRandMember(c.vu.Context(), key).Result()731		if err != nil {732			reject(err)733			return734		}735		resolve(element)736	}()737	return promise738}739// Spop removes and returns a random element from the set value stored at key.740func (c *Client) Spop(key string) *goja.Promise {741	promise, resolve, reject := c.makeHandledPromise()742	if err := c.connect(); err != nil {743		reject(err)744		return promise745	}746	go func() {747		element, err := c.redisClient.SPop(c.vu.Context(), key).Result()748		if err != nil {749			reject(err)750			return751		}752		resolve(element)753	}()754	return promise755}756// SendCommand sends a command to the redis server.757func (c *Client) SendCommand(command string, args ...interface{}) *goja.Promise {758	var doArgs []interface{}759	doArgs = append(doArgs, command)760	doArgs = append(doArgs, args...)761	promise, resolve, reject := c.makeHandledPromise()762	if err := c.connect(); err != nil {763		reject(err)764		return promise765	}766	if err := c.isSupportedType(1, args...); err != nil {767		reject(err)768		return promise769	}770	go func() {771		cmd, err := c.redisClient.Do(c.vu.Context(), doArgs...).Result()772		if err != nil {773			reject(err)774			return775		}776		resolve(cmd)777	}()778	return promise779}780// makeHandledPromise will create a promise and return its resolve and reject methods,781// wrapped in such a way that it will block the eventloop from exiting before they are782// called even if the promise isn't resolved by the time the current script ends executing.783func (c *Client) makeHandledPromise() (*goja.Promise, func(interface{}), func(interface{})) {784	runtime := c.vu.Runtime()785	callback := c.vu.RegisterCallback()786	p, resolve, reject := runtime.NewPromise()787	return p, func(i interface{}) {788			// more stuff789			callback(func() error {790				resolve(i)791				return nil792			})793		}, func(i interface{}) {794			// more stuff795			callback(func() error {796				reject(i)797				return nil798			})799		}800}801// connect establishes the client's connection to the target802// redis instance(s).803func (c *Client) connect() error {804	// A nil VU state indicates we are in the init context.805	// As a general convention, k6 should not perform IO in the806	// init context. Thus, the Connect method will error if807	// called in the init context.808	vuState := c.vu.State()809	if vuState == nil {810		return common.NewInitContextError("connecting to a redis server in the init context is not supported")811	}812	if c.redisClient == nil {813		// If k6 has a TLSConfig set in its state, use814		// it has redis' client TLSConfig too.815		if vuState.TLSConfig != nil {816			c.redisOptions.TLSConfig = vuState.TLSConfig817		}818		// use k6's lib.DialerContexter function has redis'819		// client Dialer820		c.redisOptions.Dialer = vuState.Dialer.DialContext821		c.redisClient = redis.NewUniversalClient(c.redisOptions)822	}823	return nil824}825// isSupportedType returns whether the provided arguments are of a type826// supported by the redis client.827//828// Errors will indicate the zero-indexed position of the argument of829// an unsuppoprted type.830//831// isSupportedType should report type errors with arguments in the correct832// position. To be able to accurately report the argument position in the larger833// context of a call to a redis function, the `offset` argument allows to indicate834// the amount of arguments present in front of the ones we provide to `isSupportedType`.835// For instance, when calling `set`, which takes a key, and a value argument,836// isSupportedType applied to the value should eventually report an error with837// the argument in position 1.838func (c *Client) isSupportedType(offset int, args ...interface{}) error {839	for idx, arg := range args {840		switch arg.(type) {841		case string, int, int64, float64, bool:842			return nil843		default:844			return fmt.Errorf("unsupported type: %T for argument at index: %d", arg, idx+offset)845		}846	}847	return nil848}...

initcontext.go

Source:initcontext.go

...161	return m.eventLoop.RegisterCallback()162}163/* This is here to illustrate how to use RegisterCallback to get a promise to work with the event loop164// TODO move this to a common function or remove before merging165// MakeHandledPromise will create and promise and return it's resolve, reject methods as well wrapped in such a way that166// it will block the eventloop from exiting before they are called even if the promise isn't resolved by the time the167// current script ends executing168func (m *moduleVUImpl) MakeHandledPromise() (*goja.Promise, func(interface{}), func(interface{})) {169	callback := m.eventLoop.registerCallback()170	p, resolve, reject := m.runtime.NewPromise()171	return p, func(i interface{}) {172			// more stuff173			callback(func() { resolve(i) })174		}, func(i interface{}) {175			// more stuff176			callback(func() { reject(i) })177		}178}179*/180func toESModuleExports(exp modules.Exports) interface{} {181	if exp.Named == nil {182		return exp.Default...

MakeHandledPromise

Using AI Code Generation

1import (2func main() {3	promise := js.Global.Get("Promise").Call("makeHandledPromise")4	promise.Call("then", func(v *js.Object) {5		println("success", v)6	})7	promise.Call("catch", func(v *js.Object) {8		println("error", v)9	})10	promise.Call("finally", func(v *js.Object) {11		println("finally", v)12	})13}14import (15func main() {16	promise := js.Global.Get("Promise").Call("makeHandledPromise")17	promise.Call("then", func(v *js.Object) {18		println("success", v)19	})20	promise.Call("catch", func(v *js.Object) {21		println("error", v)22	})23	promise.Call("finally", func(v *js.Object) {24		println("finally", v)25	})26}27import (28func main() {29	promise := js.Global.Get("Promise").Call("makeHandledPromise")30	promise.Call("then", func(v *js.Object) {31		println("success", v)32	})33	promise.Call("catch", func(v *js.Object) {34		println("error", v)35	})36	promise.Call("finally", func(v *js.Object) {37		println("finally", v)38	})39}40import (41func main() {42	promise := js.Global.Get("Promise").Call("makeHandledPromise")43	promise.Call("then", func(v *js.Object) {44		println("success", v)45	})46	promise.Call("catch", func(v *js.Object) {47		println("error", v)48	})49	promise.Call("finally", func(v *js.Object) {50		println("finally", v)51	})52}53import (

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