deno.land / x / fuse@v6.4.1 / docs / api / indexing.md
tags:
Fuse.createIndex
Pre-generate the index from the list, and pass it directly into the Fuse instance. If the list is (considerably) large, it speed up instantiation.
Example
const books = [
{
title: "Old Man's War",
author: {
firstName: 'John',
lastName: 'Scalzi'
}
},
{
title: 'The Lock Artist',
author: {
firstName: 'Steve',
lastName: 'Hamilton'
}
}
/*...*/
]
const options = { keys: ['title', 'author.firstName'] }
// Create the Fuse index
const myIndex = Fuse.createIndex(options.keys, books)
// initialize Fuse with the index
const fuse = new Fuse(books, options, myIndex)
:::tip Fuse will automatically index the table if one isn't provided during instantiation. :::
Fuse.parseIndex
Parses a serialized Fuse index.
Example
// (1) In the build step
// Create the Fuse index
const myIndex = Fuse.createIndex(['title', 'author.firstName'], books)
// Serialize and save it
fs.writeFile('fuse-index.json', JSON.stringify(myIndex.toJSON()))
// (2) When app starts
// Load and deserialize index
const fuseIndex = await require('fuse-index.json')
const myIndex = Fuse.parseIndex(fuseIndex)
// initialize Fuse with the index
const fuse = new Fuse(books, options, myIndex)
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