StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics
https://doi.org/10.1109/TVCG.2020.3030352
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81 lines
2.2 KiB
81 lines
2.2 KiB
4 years ago
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'use strict';
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var path = require('path');
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var utils = require('../utils');
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module.exports = function(app, options) {
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return function(obj, prop, config, schema) {
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if (!obj || utils.isEmpty(obj)) return null;
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if (!utils.isObject(obj)) {
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throw new TypeError('expected package.json "' + app._name + '.middleware" to be an object');
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}
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for (var key in obj) {
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var arr = obj[key];
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if (typeof arr === 'string' || utils.isObject(arr)) {
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arr = [arr];
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}
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obj[key] = arr.map(function(val) {
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var obj = {};
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if (typeof val === 'string') {
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obj.name = val;
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try {
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obj.fn = require(val);
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} catch (err) {
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try {
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obj.fn = require(path.resolve(val));
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} catch (x) {
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// throw first error, with original `val`
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throw err;
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}
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}
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}
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if (typeof obj.fn === 'function') {
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val = obj;
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}
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var opts = {};
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if (utils.isObject(val.options)) {
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opts = val.options;
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delete val.options;
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}
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if (typeof val.fn !== 'function') {
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if (typeof val.name !== 'string') {
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var keys = Object.keys(val).filter(function(k) {
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return ['fn', 'method', 'name', 'options'].indexOf(k) === -1;
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});
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var temp = val[keys[0]];
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if (keys.length === 1) {
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if (typeof val.method === 'string') {
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val.fn = temp[val.method];
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} else if (typeof temp === 'function') {
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val.fn = temp;
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} else {
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opts = utils.extend({}, opts, temp);
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}
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delete val[keys[0]];
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val.name = keys[0];
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} else {
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throw new Error('unexpected keys defined on middleware config: "' + keys.join(', ') + '"');
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}
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}
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if (typeof val.name === 'string' && typeof val.fn !== 'function') {
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var fp = utils.resolve.sync(val.name, {basedir: app.cwd});
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val.fn = require(fp);
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}
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}
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val.options = utils.extend({}, val.options, opts);
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return val;
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});
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}
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return obj;
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};
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};
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