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do not reset handlers if msw is not defined for story, fix #25 #79

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do not reset handlers if msw is not defined for story, fix #25 #79

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32 changes: 15 additions & 17 deletions packages/msw-addon/src/mswDecorator.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -79,26 +79,24 @@ export const mswDecorator: DecoratorFunction = (
parameters: { msw },
} = context

if (api) {
if (api && msw) {
api.resetHandlers()

if (msw) {
if (Array.isArray(msw) && msw.length > 0) {
// Support an Array of request handlers (backwards compatability).
api.use(...msw)
} else if ('handlers' in msw && msw.handlers) {
// Support an Array named request handlers handlers
// or an Object of named request handlers with named arrays of handlers
const handlers = Object.values(msw.handlers)
.filter(Boolean)
.reduce(
(handlers, handlersList) => handlers.concat(handlersList),
[] as RequestHandler[]
)
if (Array.isArray(msw) && msw.length > 0) {
// Support an Array of request handlers (backwards compatability).
api.use(...msw)
} else if ('handlers' in msw && msw.handlers) {
// Support an Array named request handlers handlers
// or an Object of named request handlers with named arrays of handlers
const handlers = Object.values(msw.handlers)
.filter(Boolean)
.reduce(
(handlers, handlersList) => handlers.concat(handlersList),
[] as RequestHandler[]
)

if (handlers.length > 0) {
api.use(...handlers)
}
if (handlers.length > 0) {
api.use(...handlers)
}
}
}
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