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62 lines
1.3 KiB
Plaintext
62 lines
1.3 KiB
Plaintext
'use strict';
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const format = require('./format');
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function fillExcept(info, fillExceptKeys, metadataKey) {
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const savedKeys = fillExceptKeys.reduce((acc, key) => {
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acc[key] = info[key];
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delete info[key];
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return acc;
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}, {});
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const metadata = Object.keys(info).reduce((acc, key) => {
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acc[key] = info[key];
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delete info[key];
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return acc;
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}, {});
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Object.assign(info, savedKeys, {
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[metadataKey]: metadata
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});
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return info;
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}
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function fillWith(info, fillWithKeys, metadataKey) {
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info[metadataKey] = fillWithKeys.reduce((acc, key) => {
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acc[key] = info[key];
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delete info[key];
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return acc;
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}, {});
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return info;
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}
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/**
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* Adds in a "metadata" object to collect extraneous data, similar to the metadata
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* object in winston 2.x.
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*/
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module.exports = format((info, opts = {}) => {
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let metadataKey = 'metadata';
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if (opts.key) {
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metadataKey = opts.key;
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}
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let fillExceptKeys = [];
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if (!opts.fillExcept && !opts.fillWith) {
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fillExceptKeys.push('level');
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fillExceptKeys.push('message');
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}
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if (opts.fillExcept) {
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fillExceptKeys = opts.fillExcept;
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}
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if (fillExceptKeys.length > 0) {
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return fillExcept(info, fillExceptKeys, metadataKey);
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}
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if (opts.fillWith) {
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return fillWith(info, opts.fillWith, metadataKey);
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}
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return info;
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});
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