unleash-proxy-client - npm Package Compare versions

Comparing version 3.3.1 to 3.3.2

build/cjs/index.d.ts

@@ -90,2 +90,3 @@ import { TinyEmitter } from 'tiny-emitter';
     getVariant(toggleName: string): IVariant;
+    private updateToggles;
     updateContext(context: IMutableContext): Promise<void>;
@@ -104,2 +105,3 @@ getContext(): {
     setContextField(field: string, value: string): void;
+    removeContextField(field: string): void;
     private init;
@@ -106,0 +108,0 @@ start(): Promise<void>;

build/main.esm.js

@@ -1,2 +0,2 @@
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0}catch(t){console.error(t)}},t}();let f;const p=new Uint8Array(16);function d(){if(!f&&(f="undefined"!=typeof crypto&&crypto.getRandomValues&&crypto.getRandomValues.bind(crypto),!f))throw new Error("crypto.getRandomValues() not supported. See https://github.com/uuidjs/uuid#getrandomvalues-not-supported");return f(p)}const v=[];for(let t=0;t<256;++t)v.push((t+256).toString(16).slice(1));var m={randomUUID:"undefined"!=typeof crypto&&crypto.randomUUID&&crypto.randomUUID.bind(crypto)};function y(t,e,r){if(m.randomUUID&&!e&&!t)return m.randomUUID();const n=(t=t||{}).random||(t.rng||d)();if(n[6]=15&n[6]|64,n[8]=63&n[8]|128,e){r=r||0;for(let t=0;t<16;++t)e[r+t]=n[t];return e}return function(t,e=0){return v[t[e+0]]+v[t[e+1]]+v[t[e+2]]+v[t[e+3]]+"-"+v[t[e+4]]+v[t[e+5]]+"-"+v[t[e+6]]+v[t[e+7]]+"-"+v[t[e+8]]+v[t[e+9]]+"-"+v[t[e+10]]+v[t[e+11]]+v[t[e+12]]+v[t[e+13]]+v[t[e+14]]+v[t[e+15]]}(n)}var g=function(){function t(){}return t.prototype.generateEventId=function(){return y()},t.prototype.createImpressionEvent=function(t,r,n,o,i,s){var a=this.createBaseEvent(t,r,n,o,i);return s?e(e({},a),{variant:s}):a},t.prototype.createBaseEvent=function(t,e,r,n,o){return{eventType:n,eventId:this.generateEventId(),context:t,enabled:e,featureName:r,impressionData:o}},t}(),b=["userId","sessionId","remoteAddress","currentTime"],w={INIT:"initialized",ERROR:"error",READY:"ready",UPDATE:"update",IMPRESSION:"impression",SENT:"sent",RECOVERED:"recovered"},E="isEnabled",I="getVariant",S={name:"disabled",enabled:!1,feature_enabled:!1},R="repo",x=function(){try{if("undefined"!=typeof window&&"fetch"in window)return fetch.bind(window);if("fetch"in globalThis)return fetch.bind(globalThis)}catch(t){console.error('Unleash failed to resolve "fetch"',t)}},k=function(o){function i(t){var r=t.storageProvider,n=t.url,i=t.clientKey,s=t.disableRefresh,a=void 0!==s&&s,c=t.refreshInterval,f=void 0===c?30:c,p=t.metricsInterval,d=void 0===p?30:p,v=t.disableMetrics,m=void 0!==v&&v,y=t.appName,b=t.environment,E=void 0===b?"default":b,I=t.context,S=t.fetch,R=void 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h),K.refreshInterval=a?0:1e3*f,K.context=e({appName:y,environment:E},I),K.usePOSTrequests=_,K.sdkState="initializing",K.ready=new Promise((function(t){K.init().then(t).catch((function(e){console.error(e),K.sdkState="error",K.emit(w.ERROR,e),t()}))})),R||console.error('Unleash: You must either provide your own "fetch" implementation or run in an environment where "fetch" is available.'),T||console.error('Unleash: You must either provide your own "AbortController" implementation or run in an environment where "AbortController" is available.'),K.fetch=R,K.createAbortController=T,K.bootstrap=O&&O.length>0?O:void 0,K.bootstrapOverride=A,K.metrics=new u({onError:K.emit.bind(K,w.ERROR),onSent:K.emit.bind(K,w.SENT),appName:y,metricsInterval:d,disableMetrics:m,url:K.url,clientKey:i,fetch:R,headerName:U,customHeaders:P}),K}return function(e,r){if("function"!=typeof r&&null!==r)throw new TypeError("Class extends value "+String(r)+" is not a constructor or null");function n(){this.constructor=e}t(e,r),e.prototype=null===r?Object.create(r):(n.prototype=r.prototype,new n)}(i,o),i.prototype.getAllToggles=function(){return function(t,e,r){if(r||2===arguments.length)for(var n,o=0,i=e.length;o<i;o++)!n&&o in e||(n||(n=Array.prototype.slice.call(e,0,o)),n[o]=e[o]);return t.concat(n||Array.prototype.slice.call(e))}([],this.toggles,!0)},i.prototype.isEnabled=function(t){var e,r=this.toggles.find((function(e){return e.name===t})),n=!!r&&r.enabled;if(this.metrics.count(t,n),(null==r?void 0:r.impressionData)||this.impressionDataAll){var o=this.eventsHandler.createImpressionEvent(this.context,n,t,E,null!==(e=null==r?void 0:r.impressionData)&&void 0!==e?e:void 0);this.emit(w.IMPRESSION,o)}return n},i.prototype.getVariant=function(t){var r,n=this.toggles.find((function(e){return e.name===t})),o=(null==n?void 0:n.enabled)||!1,i=n?n.variant:S;if(i.name&&this.metrics.countVariant(t,i.name),this.metrics.count(t,o),(null==n?void 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+var t=function(e,r){return t=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r])},t(e,r)};var e=function(){return e=Object.assign||function(t){for(var e,r=1,n=arguments.length;r<n;r++)for(var o in e=arguments[r])Object.prototype.hasOwnProperty.call(e,o)&&(t[o]=e[o]);return t},e.apply(this,arguments)};function r(t,e,r,n){return new(r||(r=Promise))((function(o,i){function s(t){try{c(n.next(t))}catch(t){i(t)}}function a(t){try{c(n.throw(t))}catch(t){i(t)}}function c(t){var e;t.done?o(t.value):(e=t.value,e instanceof r?e:new r((function(t){t(e)}))).then(s,a)}c((n=n.apply(t,e||[])).next())}))}function n(t,e){var r,n,o,i,s={label:0,sent:function(){if(1&o[0])throw o[1];return o[1]},trys:[],ops:[]};return i={next:a(0),throw:a(1),return:a(2)},"function"==typeof Symbol&&(i[Symbol.iterator]=function(){return this}),i;function a(a){return function(c){return function(a){if(r)throw 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 //# sourceMappingURL=main.esm.js.map

build/main.min.js

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4:return[2]}}))}))},t.prototype.count=function(t,e){return!(this.disabled||!this.bucket)&&(this.assertBucket(t),this.bucket.toggles[t][e?"yes":"no"]++,!0)},t.prototype.countVariant=function(t,e){return!(this.disabled||!this.bucket)&&(this.assertBucket(t),this.bucket.toggles[t].variants[e]?this.bucket.toggles[t].variants[e]+=1:this.bucket.toggles[t].variants[e]=1,!0)},t.prototype.assertBucket=function(t){if(this.disabled||!this.bucket)return!1;this.bucket.toggles[t]||(this.bucket.toggles[t]={yes:0,no:0,variants:{}})},t.prototype.startTimer=function(){var t=this;this.timer=setInterval((function(){t.sendMetrics()}),this.metricsInterval)},t.prototype.bucketIsEmpty=function(t){return 0===Object.keys(t.bucket.toggles).length},t.prototype.getPayload=function(){var t=r(r({},this.bucket),{stop:new Date});return this.bucket=this.createEmptyBucket(),{bucket:t,appName:this.appName,instanceId:"browser"}},t}(),h=function(){function t(){this.store=new Map}return t.prototype.save=function(t,e){return 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See https://github.com/uuidjs/uuid#getrandomvalues-not-supported");return p(d)}const m=[];for(let t=0;t<256;++t)m.push((t+256).toString(16).slice(1));var y={randomUUID:"undefined"!=typeof crypto&&crypto.randomUUID&&crypto.randomUUID.bind(crypto)};function g(t,e,r){if(y.randomUUID&&!e&&!t)return y.randomUUID();const n=(t=t||{}).random||(t.rng||v)();if(n[6]=15&n[6]|64,n[8]=63&n[8]|128,e){r=r||0;for(let t=0;t<16;++t)e[r+t]=n[t];return e}return function(t,e=0){return m[t[e+0]]+m[t[e+1]]+m[t[e+2]]+m[t[e+3]]+"-"+m[t[e+4]]+m[t[e+5]]+"-"+m[t[e+6]]+m[t[e+7]]+"-"+m[t[e+8]]+m[t[e+9]]+"-"+m[t[e+10]]+m[t[e+11]]+m[t[e+12]]+m[t[e+13]]+m[t[e+14]]+m[t[e+15]]}(n)}var b=function(){function t(){}return t.prototype.generateEventId=function(){return g()},t.prototype.createImpressionEvent=function(t,e,n,o,i,s){var a=this.createBaseEvent(t,e,n,o,i);return s?r(r({},a),{variant:s}):a},t.prototype.createBaseEvent=function(t,e,r,n,o){return{eventType:n,eventId:this.generateEventId(),context:t,enabled:e,featureName:r,impressionData:o}},t}(),w=["userId","sessionId","remoteAddress","currentTime"],E=function(t){return w.includes(t)},I={INIT:"initialized",ERROR:"error",READY:"ready",UPDATE:"update",IMPRESSION:"impression",SENT:"sent",RECOVERED:"recovered"},S="isEnabled",x="getVariant",T={name:"disabled",enabled:!1,feature_enabled:!1},R="repo",k=function(){try{if("undefined"!=typeof window&&"fetch"in window)return fetch.bind(window);if("fetch"in globalThis)return fetch.bind(globalThis)}catch(t){console.error('Unleash failed to resolve "fetch"',t)}},O=function(t){function i(e){var n=e.storageProvider,o=e.url,i=e.clientKey,s=e.disableRefresh,a=void 0!==s&&s,c=e.refreshInterval,u=void 0===c?30:c,p=e.metricsInterval,d=void 0===p?30:p,v=e.disableMetrics,m=void 0!==v&&v,y=e.appName,g=e.environment,w=void 0===g?"default":g,E=e.context,S=e.fetch,x=void 0===S?k():S,T=e.createAbortController,R=void 0===T?function(){try{if("undefined"!=typeof window&&"AbortController"in window)return function(){return new window.AbortController};if("fetch"in globalThis)return function(){return new globalThis.AbortController}}catch(t){console.error('Unleash failed to resolve "AbortController" factory',t)}}():T,O=e.bootstrap,N=e.bootstrapOverride,A=void 0===N||N,C=e.headerName,D=void 0===C?"Authorization":C,U=e.customHeaders,P=void 0===U?{}:U,j=e.impressionDataAll,H=void 0!==j&&j,M=e.usePOSTrequests,_=void 0!==M&&M,K=t.call(this)||this;if(K.toggles=[],K.etag="",K.readyEventEmitted=!1,K.usePOSTrequests=!1,K.started=!1,!o)throw new Error("url is required");if(!i)throw new Error("clientKey is required");if(!y)throw new Error("appName is required.");return K.eventsHandler=new b,K.impressionDataAll=H,K.toggles=O&&O.length>0?O:[],K.url=o instanceof URL?o:new URL(o),K.clientKey=i,K.headerName=D,K.customHeaders=P,K.storage=n||("undefined"!=typeof window?new f:new h),K.refreshInterval=a?0:1e3*u,K.context=r({appName:y,environment:w},E),K.usePOSTrequests=_,K.sdkState="initializing",K.ready=new Promise((function(t){K.init().then(t).catch((function(e){console.error(e),K.sdkState="error",K.emit(I.ERROR,e),t()}))})),x||console.error('Unleash: You must either provide your own "fetch" implementation or run in an environment where "fetch" is available.'),R||console.error('Unleash: You must either provide your own "AbortController" implementation or run in an environment where "AbortController" is available.'),K.fetch=x,K.createAbortController=R,K.bootstrap=O&&O.length>0?O:void 0,K.bootstrapOverride=A,K.metrics=new l({onError:K.emit.bind(K,I.ERROR),onSent:K.emit.bind(K,I.SENT),appName:y,metricsInterval:d,disableMetrics:m,url:K.url,clientKey:i,fetch:x,headerName:D,customHeaders:P}),K}return function(t,r){if("function"!=typeof r&&null!==r)throw new TypeError("Class extends value "+String(r)+" is not a constructor or null");function n(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(n.prototype=r.prototype,new n)}(i,t),i.prototype.getAllToggles=function(){return function(t,e,r){if(r||2===arguments.length)for(var n,o=0,i=e.length;o<i;o++)!n&&o in e||(n||(n=Array.prototype.slice.call(e,0,o)),n[o]=e[o]);return t.concat(n||Array.prototype.slice.call(e))}([],this.toggles,!0)},i.prototype.isEnabled=function(t){var e,r=this.toggles.find((function(e){return e.name===t})),n=!!r&&r.enabled;if(this.metrics.count(t,n),(null==r?void 0:r.impressionData)||this.impressionDataAll){var o=this.eventsHandler.createImpressionEvent(this.context,n,t,S,null!==(e=null==r?void 0:r.impressionData)&&void 0!==e?e:void 0);this.emit(I.IMPRESSION,o)}return n},i.prototype.getVariant=function(t){var e,n=this.toggles.find((function(e){return e.name===t})),o=(null==n?void 0:n.enabled)||!1,i=n?n.variant:T;if(i.name&&this.metrics.countVariant(t,i.name),this.metrics.count(t,o),(null==n?void 0:n.impressionData)||this.impressionDataAll){var s=this.eventsHandler.createImpressionEvent(this.context,o,t,x,null!==(e=null==n?void 0:n.impressionData)&&void 0!==e?e:void 0,i.name);this.emit(I.IMPRESSION,s)}return r(r({},i),{feature_enabled:o})},i.prototype.updateToggles=function(){return n(this,void 0,void 0,(function(){var t=this;return o(this,(function(e){switch(e.label){case 0:return this.timerRef||this.readyEventEmitted?[4,this.fetchToggles()]:[3,2];case 1:return e.sent(),[3,4];case 2:return this.started?[4,new Promise((function(e){var r=function(){t.fetchToggles().then((function(){t.off(I.READY,r),e()}))};t.once(I.READY,r)}))]:[3,4];case 3:e.sent(),e.label=4;case 4:return[2]}}))}))},i.prototype.updateContext=function(t){return n(this,void 0,void 0,(function(){var e;return o(this,(function(n){switch(n.label){case 0:return(t.appName||t.environment)&&console.warn("appName and environment are static. They can't be updated with updateContext."),e={environment:this.context.environment,appName:this.context.appName,sessionId:this.context.sessionId},this.context=r(r({},e),t),[4,this.updateToggles()];case 1:return n.sent(),[2]}}))}))},i.prototype.getContext=function(){return r({},this.context)},i.prototype.setContextField=function(t,e){var n,o;if(E(t))this.context=r(r({},this.context),((n={})[t]=e,n));else{var i=r(r({},this.context.properties),((o={})[t]=e,o));this.context=r(r({},this.context),{properties:i})}this.updateToggles()},i.prototype.removeContextField=function(t){var e;E(t)?this.context=r(r({},this.context),((e={})[t]=void 0,e)):"object"==typeof this.context.properties&&delete this.context.properties[t],this.updateToggles()},i.prototype.init=function(){return n(this,void 0,void 0,(function(){var t,e;return o(this,(function(n){switch(n.label){case 0:return[4,this.resolveSessionId()];case 1:return t=n.sent(),this.context=r({sessionId:t},this.context),e=this,[4,this.storage.get(R)];case 2:return e.toggles=n.sent()||[],!this.bootstrap||!this.bootstrapOverride&&0!==this.toggles.length?[3,4]:[4,this.storage.save(R,this.bootstrap)];case 3:n.sent(),this.toggles=this.bootstrap,this.emit(I.READY),n.label=4;case 4:return this.sdkState="healthy",this.emit(I.INIT),[2]}}))}))},i.prototype.start=function(){return n(this,void 0,void 0,(function(){var t,e=this;return o(this,(function(r){switch(r.label){case 0:return this.started=!0,this.timerRef?(console.error("Unleash SDK has already started, if you want to restart the SDK you should call client.stop() before starting again."),[2]):[4,this.ready];case 1:return r.sent(),this.metrics.start(),t=this.refreshInterval,[4,this.fetchToggles()];case 2:return r.sent(),t>0&&(this.timerRef=setInterval((function(){return e.fetchToggles()}),t)),[2]}}))}))},i.prototype.stop=function(){this.timerRef&&(clearInterval(this.timerRef),this.timerRef=void 0),this.metrics.stop()},i.prototype.resolveSessionId=function(){return n(this,void 0,void 0,(function(){var t;return o(this,(function(e){switch(e.label){case 0:return this.context.sessionId?[2,this.context.sessionId]:[4,this.storage.get("sessionId")];case 1:return(t=e.sent())?[3,3]:(t=Math.floor(1e9*Math.random()),[4,this.storage.save("sessionId",t)]);case 2:e.sent(),e.label=3;case 3:return[2,t]}}))}))},i.prototype.getHeaders=function(){var t,e=this.usePOSTrequests,r=((t={})[this.headerName]=this.clientKey,t.Accept="application/json",t);return e&&(r["Content-Type"]="application/json"),this.etag&&(r["If-None-Match"]=this.etag),Object.entries(this.customHeaders).filter(c).forEach((function(t){var e=t[0],n=t[1];return r[e]=n})),r},i.prototype.storeToggles=function(t){return n(this,void 0,void 0,(function(){return o(this,(function(e){switch(e.label){case 0:return this.toggles=t,this.emit(I.UPDATE),[4,this.storage.save(R,t)];case 1:return e.sent(),[2]}}))}))},i.prototype.fetchToggles=function(){return n(this,void 0,void 0,(function(){var t,e,r,n,i,s,a,u;return o(this,(function(o){switch(o.label){case 0:if(!this.fetch)return[3,9];this.abortController&&this.abortController.abort(),this.abortController=this.createAbortController&&this.createAbortController(),t=this.abortController?this.abortController.signal:void 0,o.label=1;case 1:return o.trys.push([1,7,8,9]),e=this.usePOSTrequests,r=e?this.url:function(t,e){var r=new URL(t.toString());return Object.entries(e).filter(c).forEach((function(t){var e=t[0],n=t[1];"properties"===e&&n?Object.entries(n).filter(c).forEach((function(t){var e=t[0],n=t[1];return r.searchParams.append("properties[".concat(e,"]"),n)})):r.searchParams.append(e,n)})),r}(this.url,this.context),n=e?"POST":"GET",i=e?JSON.stringify({context:this.context}):void 0,[4,this.fetch(r.toString(),{method:n,cache:"no-cache",headers:this.getHeaders(),body:i,signal:t})];case 2:return s=o.sent(),"error"===this.sdkState&&s.status<400&&(this.sdkState="healthy",this.emit(I.RECOVERED)),s.ok&&304!==s.status?(this.etag=s.headers.get("ETag")||"",[4,s.json()]):[3,5];case 3:return a=o.sent(),[4,this.storeToggles(a.toggles)];case 4:return o.sent(),"healthy"!==this.sdkState&&(this.sdkState="healthy"),this.bootstrap||this.readyEventEmitted||(this.emit(I.READY),this.readyEventEmitted=!0),[3,6];case 5:s.ok||304===s.status||(console.error("Unleash: Fetching feature toggles did not have an ok response"),this.sdkState="error",this.emit(I.ERROR,{type:"HttpError",code:s.status})),o.label=6;case 6:return[3,9];case 7:return u=o.sent(),console.error("Unleash: unable to fetch feature toggles",u),this.sdkState="error",this.emit(I.ERROR,u),[3,9];case 8:return this.abortController=null,[7];case 9:return[2]}}))}))},i}(a);t.EVENTS=I,t.InMemoryStorageProvider=h,t.LocalStorageProvider=f,t.UnleashClient=O,t.resolveFetch=k}));
 //# sourceMappingURL=main.min.js.map

package.json

 {
   "name": "unleash-proxy-client",
-  "version": "3.3.1",
+  "version": "3.3.2",
   "description": "A browser client that can be used together with the unleash-proxy.",
@@ -5,0 +5,0 @@ "type": "module",

README.md

@@ -91,3 +91,3 @@ # Unleash Proxy Client for the browser (JS)
 
-The [Unleash context](https://docs.getunleash.io/reference/unleash-context) is used to evaluate features against attributes of a the current user. To update and configure the Unleash context in this SDK, use the `updateContext` and `setContextField` methods.
+The [Unleash context](https://docs.getunleash.io/reference/unleash-context) is used to evaluate features against attributes of a the current user. To update and configure the Unleash context in this SDK, use the `updateContext`, `setContextField` and `removeContextField` methods.
 
@@ -107,2 +107,10 @@ The context you set in your app will be passed along to the Unleash proxy or the front-end API as query parameters for feature evaluation.
 
+The `removeContextField` method only acts on the property that you choose. It does not affect any other properties of the Unleash context.
+
+```js
+unleash.updateContext({ userId: '1233', sessionId: 'sessionNotAffected' });
+
+unleash.removeContextField('userId');
+```
+
 ### Available options
@@ -109,0 +117,0 @@

src/index.test.ts

@@ -63,2 +63,5 @@ import { FetchMock } from 'jest-fetch-mock';
     expect(body.context.appName).toBe('webAsPOST');
+    expect(request.headers).toMatchObject({
+        'Content-Type': 'application/json',
+    });
 });
@@ -79,2 +82,5 @@
     expect(request.method).toBe('GET');
+    expect(request.headers).not.toMatchObject({
+        'Content-Type': 'application/json',
+    });
 });
@@ -1061,2 +1067,25 @@
 
+test('Should removeContextField', async () => {
+    const userId = 'some-id-123';
+    const customValue = 'customValue';
+    const config: IConfig = {
+        url: 'http://localhost/test',
+        clientKey: '12',
+        appName: 'web',
+    };
+    const client = new UnleashClient(config);
+    client.setContextField('userId', userId);
+    client.setContextField('customField', customValue);
+
+    client.removeContextField('userId');
+    client.removeContextField('customField');
+    const context = client.getContext();
+
+    expect(context).toEqual({
+        appName: 'web',
+        environment: 'default',
+        properties: {},
+    });
+});
+
 test('Should setContextField with sessionId', async () => {
@@ -1063,0 +1092,0 @@ const sessionId = 'some-session-id-123';

src/index.ts

@@ -9,3 +9,9 @@ import { TinyEmitter } from 'tiny-emitter';
 
-const DEFINED_FIELDS = ['userId', 'sessionId', 'remoteAddress', 'currentTime'];
+const DEFINED_FIELDS = [
+    'userId',
+    'sessionId',
+    'remoteAddress',
+    'currentTime',
+] as const;
+type DefinedField = (typeof DEFINED_FIELDS)[number];
 
@@ -29,2 +35,6 @@ interface IStaticContext {
 
+const isDefinedContextField = (field: string): field is DefinedField => {
+    return DEFINED_FIELDS.includes(field as DefinedField);
+};
+
 interface IConfig extends IStaticContext {
@@ -276,2 +286,18 @@ url: URL | string;
 
+    private async updateToggles() {
+        if (this.timerRef || this.readyEventEmitted) {
+            await this.fetchToggles();
+        } else if (this.started) {
+            await new Promise<void>((resolve) => {
+                const listener = () => {
+                    this.fetchToggles().then(() => {
+                        this.off(EVENTS.READY, listener);
+                        resolve();
+                    });
+                };
+                this.once(EVENTS.READY, listener);
+            });
+        }
+    }
+
     public async updateContext(context: IMutableContext): Promise<void> {
@@ -292,15 +318,3 @@ // @ts-expect-error Give the user a nicer error message when
 
-        if (this.timerRef || this.readyEventEmitted) {
-            await this.fetchToggles();
-        } else if (this.started) {
-            await new Promise<void>((resolve) => {
-                const listener = () => {
-                    this.fetchToggles().then(() => {
-                        this.off(EVENTS.READY, listener);
-                        resolve();
-                    });
-                };
-                this.once(EVENTS.READY, listener);
-            });
-        }
+        await this.updateToggles();
     }
@@ -313,3 +327,3 @@
     public setContextField(field: string, value: string) {
-        if (DEFINED_FIELDS.includes(field)) {
+        if (isDefinedContextField(field)) {
             this.context = { ...this.context, [field]: value };
@@ -320,5 +334,14 @@ } else {
         }
-        if (this.timerRef) {
-            this.fetchToggles();
+
+        this.updateToggles();
+    }
+
+    public removeContextField(field: string): void {
+        if (isDefinedContextField(field)) {
+            this.context = { ...this.context, [field]: undefined };
+        } else if (typeof this.context.properties === 'object') {
+            delete this.context.properties[field];
         }
+
+        this.updateToggles();
     }
@@ -386,7 +409,10 @@
     private getHeaders() {
+        const isPOST = this.usePOSTrequests;
         const headers = {
             [this.headerName]: this.clientKey,
             Accept: 'application/json',
-            'Content-Type': 'application/json',
         };
+        if (isPOST) {
+            headers['Content-Type'] = 'application/json';
+        }
         if (this.etag) {
@@ -393,0 +419,0 @@ headers['If-None-Match'] = this.etag;

No alert changes

Improved metrics

Total package byte prevSize

309098

increased by1.48%

Lines of code

2942

increased by1.83%

Number of lines in readme file

291

increased by2.83%

No dependency changes