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@superjs/observe

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use Proxy to observe changes for nested object

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# @superjs/observe use Proxy to observe changes for nested object ## Example ```javascript const observe = require('@superjs/observe') let x=observe({a:{b:1}},(change)=>{ console.log(change) }) x.a.b=2 ``` The argument `change` will be output as below: ``` { key: 'a', type: 'object', data: { a: { b: 2 } }, change: { key: 'b', type: 'object', data: { b: 2 }, change: { data: 2 } } } ``` For array type, only changes for NormalInteger keys will be tracked: ```javascript const observe = require('@superjs/observe') let x=observe({a:{b:[]}},(change)=>{ console.log(change) }) x.a.b.c=2 ``` Nothing will be output.