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feat: dependent features #520

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merged 11 commits into from
Sep 21, 2023
Merged

feat: dependent features #520

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1ad6849
feat: dependent features
kwasniew Sep 19, 2023
aa83a4f
feat: dependent features
kwasniew Sep 19, 2023
e48e8ba
feat: dependent features
kwasniew Sep 20, 2023
8a0549a
feat: dependent features
kwasniew Sep 20, 2023
8793437
feat: dependent features
kwasniew Sep 20, 2023
156d0ee
feat: dependent features
kwasniew Sep 20, 2023
a426ca6
feat: dependent features
kwasniew Sep 20, 2023
e2aef0b
feat: dependent features
kwasniew Sep 20, 2023
1ed0994
feat: dependent features warning
kwasniew Sep 21, 2023
1b899f9
feat: version bump
kwasniew Sep 21, 2023
c1ba9ba
refactor: remove extra comment
kwasniew Sep 21, 2023
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30 changes: 27 additions & 3 deletions src/client.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -55,8 +55,32 @@ export default class UnleashClient extends EventEmitter {
}
}

isParentDependencySatisfied(feature: FeatureInterface | undefined, context: Context) {
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if (!feature?.name || !feature.dependencies?.length) {
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What's with the name check here? Name should always be a non empty string, do I have the dumb or is the same as

if (!feature?.dependencies?.length) {
return true;
}

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still passes the spec. not sure why I did the name check but it's not in the type anymore. I'm hallucinating :D

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Removed

return true;
}

return feature.dependencies.every(parent => {
if (this.repository.getToggle(parent.feature)?.dependencies?.length) {
return false;
}

if (parent.enabled !== false) {
if (parent.variants?.length) {
return parent.variants.includes(this.getVariant(parent.feature, context).name);
}
return this.isEnabled(parent.feature, context, () => false);
}

return !this.isEnabled(parent.feature, context, () => false);
});
}

isEnabled(name: string, context: Context, fallback: Function): boolean {
const feature = this.repository.getToggle(name);
if(!this.isParentDependencySatisfied(feature, context)) {
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return false;
}
const { enabled } = this.isFeatureEnabled(feature, context, fallback);
if (feature?.impressionData) {
this.emit(
Expand Down Expand Up @@ -92,10 +116,10 @@ export default class UnleashClient extends EventEmitter {
}

if (feature.strategies.length === 0) {
return { enabled: feature.enabled };
return { enabled: feature.enabled } as StrategyResult;
}

let strategyResult = { enabled: false };
let strategyResult: StrategyResult = { enabled: false };

feature.strategies?.some((strategySelector): boolean => {
const strategy = this.getStrategy(strategySelector.name);
Expand Down Expand Up @@ -185,7 +209,7 @@ export default class UnleashClient extends EventEmitter {
): VariantWithFeatureStatus {
const fallback = fallbackVariant || getDefaultVariant();

if (typeof feature === 'undefined') {
if (typeof feature === 'undefined' || !this.isParentDependencySatisfied(feature, context)) {
return { ...fallback, featureEnabled: false };
}

Expand Down
7 changes: 7 additions & 0 deletions src/feature.ts
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Expand Up @@ -3,6 +3,12 @@ import { Segment } from './strategy/strategy';
// eslint-disable-next-line import/no-cycle
import { VariantDefinition } from './variant';

export interface Dependency {
feature: string;
variants?: string[];
enabled?: boolean;
}

export interface FeatureInterface {
name: string;
type: string;
Expand All @@ -13,6 +19,7 @@ export interface FeatureInterface {
impressionData: boolean;
strategies: StrategyTransportInterface[];
variants: VariantDefinition[];
dependencies?: Dependency[];
}

export interface ClientFeaturesResponse {
Expand Down