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spawn-x-effects\n### Interceptor (middleware) for [spawn-x](https://github.com/atellmer/spawn-x).\n\nEffects is a small interceptor that enables make cascading state updates, when one action initialize many other actions.\n\n\n## install\nWith npm:\n```\nnpm install spawn-x spawn-x-effects --save\n```\nWith yarn:\n```\nyarn add spawn-x spawn-x-effects\n```\nWith bower:\n```\nbower install spawn-x spawn-x-effects --save\n```\n```html\n\u003cscript src=\"path/to/spawn-x/lib/spawn-x.umd.min.js\"\u003e\u003c/script\u003e\n\u003cscript src=\"path/to/spawn-x-effects/lib/spawn-x-effects.umd.min.js\"\u003e\u003c/script\u003e\n```\n\n## Usage\n\n#### app/store/index.js\n```javascript\nimport { createStore, addInterceptor } from 'spawn-x';\nimport { effects } from 'spawn-x-effects';\n\nimport { logger } from '../interceptors/logger';\nimport { tracksEffect } from '../effects/tracks';\nimport { renderEffect } from '../effects/render';\n\nconst initialState = {\n  tracks: [\n    'Puddle Of Mudd - Control',\n    'American Hi-Fi - Flavor Of The Weak',\n    'SR-71 - What A Mess'\n  ]\n}\n\n//inject effects interceptor \nconst store = createStore(\n  initialState,\n  addInterceptor(logger, effects)\n);\n\n//add effect into effects interceptor\neffects.run(tracksEffect);\neffects.run(renderEffect);\n\nexport {\n  store\n}\n\n```\n\n### Effect is just a function which accept store and action and then updates state\n#### app/effects/tracks.js\n```javascript\nimport {\n  ADD_TRACK,\n  UPDATE_STORE_INIT,\n  UPDATE_STORE,\n  UPDATE_STORE_COMPLETE,\n  NEED_RENDER\n} from '../constants';\n\n\nconst tracksEffect = (store, action) =\u003e {\n  switch (action.type) {\n    case ADD_TRACK: {\n      store.update('', {\n        type: UPDATE_STORE_INIT,\n        data: null\n      });\n      store.update('tracks', {\n        type: UPDATE_STORE,\n        data: store.select('tracks') ? store.select('tracks').concat(action.data) : [].concat(action.data)\n      });\n      store.update('', {\n        type: UPDATE_STORE_COMPLETE,\n        data: null\n      });\n      store.update('', {\n        type: NEED_RENDER,\n        data: {\n          render: store.select('tracks')\n        }\n      });\n      break;\n    }\n  }\n}\n\nexport {\n  tracksEffect\n}\n```\n\n#### app/effects/render.js\n```javascript\nimport {\n  NEED_RENDER,\n  RENDER_INIT,\n  RENDER_COMPLETE\n} from '../constants';\n\nimport { render } from '../methods/render';\n\n\nconst renderEffect = (store, action) =\u003e {\n  switch (action.type) {\n    case NEED_RENDER: {\n      store.update('', {\n        type: RENDER_INIT,\n        data: null\n      });\n\n      render(action.data.render);\n\n      store.update('', {\n        type: RENDER_COMPLETE,\n        data: null\n      });\n      break;\n    }\n  }\n}\n\nexport {\n  renderEffect\n}\n```\n\n#### app/actions/tracks.js\n```javascript\nimport { store } from '../store';\nimport { ADD_TRACK } from '../constants';\n\n\nconst addTrack = data =\u003e {\n  store.update('', {\n    type: ADD_TRACK,\n    data: data\n  });\n}\n\nexport {\n  addTrack\n}\n\n```\n\n### And other files...\n#### app/constants/index.js\n```javascript\nexport const ADD_TRACK = 'ADD_TRACK';\nexport const UPDATE_STORE_INIT = 'UPDATE_STORE_INIT';\nexport const UPDATE_STORE = 'UPDATE_STORE';\nexport const UPDATE_STORE_COMPLETE = 'UPDATE_STORE_COMPLETE';\nexport const NEED_RENDER = 'NEED_RENDER';\nexport const RENDER_INIT = 'RENDER_INIT';\nexport const RENDER_COMPLETE = 'RENDER_COMPLETE';\n```\n\n#### app/methods/render.js\n```javascript\nconst render = tracks =\u003e {\n  const list = document.querySelector('#trackList');\n\n  list.innerHTML = '';\n\n  if (tracks === null) tracks = [];\n\n  tracks.forEach(item =\u003e {\n    const li = document.createElement('li');\n\n    li.textContent = item;\n    list.appendChild(li);\n  });\n}\n\nexport {\n  render\n}\n\n```\n#### app/interceptors/logger.js\n```javascript\nfunction logger(store) {\n  return next =\u003e action =\u003e {\n    console.log('action: ', action.type + ': ', JSON.parse(JSON.stringify(action.data)));\n    next(action);\n  }\n}\n\nexport {\n  logger\n}\n```\n\n#### app/index.js\n```javascript\nimport '../index.html';\nimport { store } from './store';\nimport { render } from './methods/render';\nimport { addTrack } from './actions/tracks';\n\n\nconst btn = document.querySelector('#addTrack');\nconst input = document.querySelector('#input');\n\nbtn.addEventListener('click', () =\u003e {\n  addTrack(input.value);\n  input.value = '';\n});\n\nrender(store.select('tracks'));\n```\n\n#### index.html\n```html\n\u003c!DOCTYPE html\u003e\n\u003chtml lang=\"en\"\u003e\n\u003chead\u003e\n  \u003cmeta charset=\"UTF-8\"\u003e\n  \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n  \u003ctitle\u003eApp\u003c/title\u003e\n\u003c/head\u003e\n\u003cbody\u003e\n  \u003cinput type=\"text\" id=\"input\"\u003e\n  \u003cbutton id=\"addTrack\"\u003eAdd track\u003c/button\u003e\n  \u003cul id=\"trackList\"\u003e\u003c/ul\u003e\n\n  \u003cscript src=\"dist/app.bundle.js\"\u003e\u003c/script\u003e\n\u003c/body\u003e\n\u003c/html\u003e\n```\n\n\n## LICENSE\n\nMIT © [Alex Plex](https://github.com/atellmer)","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fatellmer%2Fspawn-x-effects","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fatellmer%2Fspawn-x-effects","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fatellmer%2Fspawn-x-effects/lists"}