62 lines
1.7 KiB
JavaScript
62 lines
1.7 KiB
JavaScript
// Unless explicitly stated otherwise all files in this repository are licensed under the Apache 2.0 License.
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//
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// This product includes software developed at Datadog (https://www.datadoghq.com/). Copyright 2021 Datadog, Inc.
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const importHooks = [] // TODO should this be a Set?
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const setters = new WeakMap()
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const getters = new WeakMap()
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const specifiers = new Map()
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const toHook = []
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const proxyHandler = {
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set (target, name, value) {
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return setters.get(target)[name](value)
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},
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get (target, name) {
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if (name === Symbol.toStringTag) {
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return 'Module'
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}
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const getter = getters.get(target)[name]
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if (typeof getter === 'function') {
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return getter()
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}
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},
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defineProperty (target, property, descriptor) {
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if ((!('value' in descriptor))) {
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throw new Error('Getters/setters are not supported for exports property descriptors.')
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}
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return setters.get(target)[property](descriptor.value)
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}
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}
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function register (name, namespace, set, get, specifier) {
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specifiers.set(name, specifier)
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setters.set(namespace, set)
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getters.set(namespace, get)
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const proxy = new Proxy(namespace, proxyHandler)
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importHooks.forEach(hook => hook(name, proxy))
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toHook.push([name, proxy])
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}
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let experimentalPatchInternals = false
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function getExperimentalPatchInternals () {
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return experimentalPatchInternals
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}
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function setExperimentalPatchInternals (value) {
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experimentalPatchInternals = value
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}
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exports.register = register
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exports.importHooks = importHooks
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exports.specifiers = specifiers
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exports.toHook = toHook
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exports.getExperimentalPatchInternals = getExperimentalPatchInternals
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exports.setExperimentalPatchInternals = setExperimentalPatchInternals
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