120 lines
2.9 KiB
JavaScript
120 lines
2.9 KiB
JavaScript
const { inspect } = require('util')
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const npmlog = require('npmlog')
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const log = require('./log-shim.js')
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const { explain } = require('./explain-eresolve.js')
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const _logHandler = Symbol('logHandler')
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const _eresolveWarn = Symbol('eresolveWarn')
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const _log = Symbol('log')
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const _npmlog = Symbol('npmlog')
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class Display {
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constructor () {
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// pause by default until config is loaded
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this.on()
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log.pause()
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}
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on () {
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process.on('log', this[_logHandler])
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}
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off () {
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process.off('log', this[_logHandler])
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// Unbalanced calls to enable/disable progress
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// will leave change listeners on the tracker
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// This pretty much only happens in tests but
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// this removes the event emitter listener warnings
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log.tracker.removeAllListeners()
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}
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load (config) {
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const {
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color,
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timing,
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loglevel,
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unicode,
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progress,
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heading = 'npm',
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} = config
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// XXX: decouple timing from loglevel
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if (timing && loglevel === 'notice') {
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log.level = 'timing'
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} else {
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log.level = loglevel
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}
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log.heading = heading
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if (color) {
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log.enableColor()
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} else {
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log.disableColor()
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}
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if (unicode) {
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log.enableUnicode()
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} else {
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log.disableUnicode()
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}
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// if it's more than error, don't show progress
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const silent = log.levels[log.level] > log.levels.error
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if (progress && !silent) {
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log.enableProgress()
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} else {
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log.disableProgress()
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}
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// Resume displaying logs now that we have config
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log.resume()
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}
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log (...args) {
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this[_logHandler](...args)
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}
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[_logHandler] = (level, ...args) => {
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try {
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this[_log](level, ...args)
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} catch (ex) {
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try {
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// if it crashed once, it might again!
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this[_npmlog]('verbose', `attempt to log ${inspect(args)} crashed`, ex)
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} catch (ex2) {
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// eslint-disable-next-line no-console
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console.error(`attempt to log ${inspect(args)} crashed`, ex, ex2)
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}
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}
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}
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[_log] (...args) {
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return this[_eresolveWarn](...args) || this[_npmlog](...args)
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}
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// Explicitly call these on npmlog and not log shim
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// This is the final place we should call npmlog before removing it.
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[_npmlog] (level, ...args) {
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npmlog[level](...args)
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}
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// Also (and this is a really inexcusable kludge), we patch the
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// log.warn() method so that when we see a peerDep override
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// explanation from Arborist, we can replace the object with a
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// highly abbreviated explanation of what's being overridden.
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[_eresolveWarn] (level, heading, message, expl) {
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if (level === 'warn' &&
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heading === 'ERESOLVE' &&
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expl && typeof expl === 'object'
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) {
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this[_npmlog](level, heading, message)
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this[_npmlog](level, '', explain(expl, log.useColor(), 2))
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// Return true to short circuit other log in chain
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return true
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}
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}
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}
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module.exports = Display
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