41 lines
737 B
JavaScript
41 lines
737 B
JavaScript
'use strict';
|
|
|
|
var isPromise = require('is-promise');
|
|
|
|
var init = function init(db, key, adapter) {
|
|
db.read = function () {
|
|
var r = adapter.read();
|
|
|
|
return isPromise(r) ? r.then(db.plant) : db.plant(r);
|
|
};
|
|
|
|
db.write = function () {
|
|
var value = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : db.getState();
|
|
|
|
var w = adapter.write(db.getState());
|
|
|
|
return isPromise(w) ? w.then(function () {
|
|
return value;
|
|
}) : value;
|
|
};
|
|
|
|
db.plant = function (state) {
|
|
db[key] = state;
|
|
return db;
|
|
};
|
|
|
|
db.getState = function () {
|
|
return db[key];
|
|
};
|
|
|
|
db.setState = function (state) {
|
|
db.plant(state);
|
|
return db;
|
|
};
|
|
|
|
return db.read();
|
|
};
|
|
|
|
module.exports = {
|
|
init
|
|
}; |