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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51 lines
2.2 KiB
51 lines
2.2 KiB
# json-parse-even-better-errors [](https://npm.im/json-parse-even-better-errors) [](https://npm.im/json-parse-even-better-errors) [](https://travis-ci.org/npm/json-parse-even-better-errors) [](https://ci.appveyor.com/project/npm/json-parse-even-better-errors) [](https://coveralls.io/github/npm/json-parse-even-better-errors?branch=latest)
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[`json-parse-even-better-errors`](https://github.com/npm/json-parse-even-better-errors) is a Node.js library for
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getting nicer errors out of `JSON.parse()`, including context and position of the parse errors.
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## Install
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`$ npm install --save json-parse-even-better-errors`
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## Table of Contents
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* [Example](#example)
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* [Features](#features)
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* [Contributing](#contributing)
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* [API](#api)
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* [`parse`](#parse)
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### Example
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```javascript
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const parseJson = require('json-parse-even-better-errors')
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parseJson('"foo"')
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parseJson('garbage') // more useful error message
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```
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### Features
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* Like JSON.parse, but the errors are better.
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### API
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#### <a name="parse"></a> `parse(txt, reviver = null, context = 20)`
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Works just like `JSON.parse`, but will include a bit more information when an
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error happens. This throws a `JSONParseError`.
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#### <a name="jsonparseerror"></a> `class JSONParseError(er, text, context = 20, caller = null)`
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Extends the JavaScript `SyntaxError` class to parse the message and provide
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better metadata.
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Pass in the error thrown by the built-in `JSON.parse`, and the text being
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parsed, and it'll parse out the bits needed to be helpful.
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`context` defaults to 20.
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Set a `caller` function to trim internal implementation details out of the
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stack trace. When calling `parseJson`, this is set to the `parseJson`
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function. If not set, then the constructor defaults to itself, so the
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stack trace will point to the spot where you call `new JSONParseError`.
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