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const GitBook = require('gitbook-core');
const TYPES = {
LOAD: 'lunr/load'
};
const INDEX_FILENAME = 'search_index.json';
/**
* Load an index set
* @param {JSON} json
* @return {Action}
*/
function load(json) {
return { type: TYPES.LOAD, json };
}
/**
* Fetch an index
* @return {Action}
*/
function fetch() {
return (dispatch, getState) => {
const { lunr, file } = getState();
const { idx } = lunr;
const filePath = file.relative(INDEX_FILENAME);
if (idx) {
return GitBook.Promise.resolve();
}
return GitBook.Promise.resolve()
.then(() => {
return window.fetch(filePath);
})
.then(response => response.json())
.then(json => dispatch(load(json)));
};
}
module.exports = {
TYPES,
fetch
};
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