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108
package/node_modules/@npmcli/config/lib/set-envs.js
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108
package/node_modules/@npmcli/config/lib/set-envs.js
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// Set environment variables for any non-default configs,
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// so that they're already there when we run lifecycle scripts.
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//
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// See https://github.com/npm/rfcs/pull/90
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// Return the env key if this is a thing that belongs in the env.
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// Ie, if the key isn't a @scope, //nerf.dart, or _private,
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// and the value is a string or array. Otherwise return false.
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const envKey = (key, val) => {
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return !/^[/@_]/.test(key) &&
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(typeof envVal(val) === 'string') &&
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`npm_config_${key.replace(/-/g, '_').toLowerCase()}`
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}
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const envVal = val => Array.isArray(val) ? val.map(v => envVal(v)).join('\n\n')
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: val === null || val === undefined || val === false ? ''
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: typeof val === 'object' ? null
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: String(val)
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const sameConfigValue = (def, val) =>
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!Array.isArray(val) || !Array.isArray(def) ? def === val
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: sameArrayValue(def, val)
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const sameArrayValue = (def, val) => {
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if (def.length !== val.length) {
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return false
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}
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for (let i = 0; i < def.length; i++) {
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/* istanbul ignore next - there are no array configs where the default
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* is not an empty array, so this loop is a no-op, but it's the correct
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* thing to do if we ever DO add a config like that. */
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if (def[i] !== val[i]) {
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return false
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}
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}
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return true
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}
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const setEnv = (env, rawKey, rawVal) => {
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const val = envVal(rawVal)
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const key = envKey(rawKey, val)
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if (key && val !== null) {
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env[key] = val
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}
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}
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const setEnvs = (config) => {
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// This ensures that all npm config values that are not the defaults are
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// shared appropriately with child processes, without false positives.
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const {
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env,
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defaults,
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definitions,
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list: [cliConf, envConf],
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} = config
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env.INIT_CWD = process.cwd()
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// if the key is deprecated, skip it always.
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// if the key is the default value,
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// if the environ is NOT the default value,
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// set the environ
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// else skip it, it's fine
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// if the key is NOT the default value,
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// if the env is setting it, then leave it (already set)
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// otherwise, set the env
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const cliSet = new Set(Object.keys(cliConf))
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const envSet = new Set(Object.keys(envConf))
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for (const key in cliConf) {
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const { deprecated, envExport = true } = definitions[key] || {}
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if (deprecated || envExport === false) {
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continue
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}
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if (sameConfigValue(defaults[key], cliConf[key])) {
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// config is the default, if the env thought different, then we
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// have to set it BACK to the default in the environment.
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if (!sameConfigValue(envConf[key], cliConf[key])) {
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setEnv(env, key, cliConf[key])
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}
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} else {
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// config is not the default. if the env wasn't the one to set
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// it that way, then we have to put it in the env
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if (!(envSet.has(key) && !cliSet.has(key))) {
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setEnv(env, key, cliConf[key])
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}
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}
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}
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// also set some other common nice envs that we want to rely on
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env.HOME = config.home
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env.npm_config_global_prefix = config.globalPrefix
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env.npm_config_local_prefix = config.localPrefix
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if (cliConf.editor) {
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env.EDITOR = cliConf.editor
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}
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// note: this doesn't afect the *current* node process, of course, since
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// it's already started, but it does affect the options passed to scripts.
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if (cliConf['node-options']) {
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env.NODE_OPTIONS = cliConf['node-options']
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}
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env.npm_execpath = config.npmBin
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env.NODE = env.npm_node_execpath = config.execPath
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}
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module.exports = setEnvs
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