Kristaps Fabians Geikins
57 lines
1.4 KiB
JavaScript
57 lines
1.4 KiB
JavaScript
const _ = require('lodash')
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const VError = require('verror')
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/**
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* Some VError implementation details that we want to remove from object representations
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* of VErrors once they're converted to them
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*/
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const VERROR_TRASH_PROPS = ['jse_shortmsg', 'jse_cause', 'jse_info']
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/**
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* Builds apollo server error formatter
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* @param {boolean} debug
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* @returns {(e: import('graphql').GraphQLError) => import('graphql').GraphQLFormattedError}
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*/
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function buildErrorFormatter(debug) {
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return function (error) {
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const debugMode = debug
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const realError = error.originalError ? error.originalError : error
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// If error isn't a VError child, don't do anything extra
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if (!(realError instanceof VError)) {
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return error
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}
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// Converting VError based error to Apollo's format
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const extensions = {
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...(error.extensions || {}),
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...(VError.info(realError) || {})
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}
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// Getting rid of redundant info
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delete extensions.originalError
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// Updating exception metadata in extensions
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if (extensions.exception) {
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extensions.exception = _.omit(extensions.exception, VERROR_TRASH_PROPS)
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if (debugMode) {
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extensions.exception.stacktrace = VError.fullStack(realError)
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} else {
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delete extensions.exception.stacktrace
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}
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}
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return {
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message: error.message,
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locations: error.locations,
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path: error.path,
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extensions
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}
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}
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}
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module.exports = {
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buildErrorFormatter
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}
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