148 lines
2.8 KiB
JavaScript
148 lines
2.8 KiB
JavaScript
'use strict';
|
|
const fs = require('fs');
|
|
const path = require('path');
|
|
const types = require('./types');
|
|
|
|
// https://github.com/npm/npm/blob/latest/lib/config/core.js#L409-L423
|
|
const envReplace = str => {
|
|
if (typeof str !== 'string' || !str) {
|
|
return str;
|
|
}
|
|
|
|
// Replace any ${ENV} values with the appropriate environment
|
|
const regex = /(\\*)\$\{([^}]+)\}/g;
|
|
|
|
return str.replace(regex, (orig, esc, name) => {
|
|
esc = esc.length > 0 && esc.length % 2;
|
|
|
|
if (esc) {
|
|
return orig;
|
|
}
|
|
|
|
if (process.env[name] === undefined) {
|
|
throw new Error(`Failed to replace env in config: ${orig}`);
|
|
}
|
|
|
|
return process.env[name];
|
|
});
|
|
};
|
|
|
|
// https://github.com/npm/npm/blob/latest/lib/config/core.js#L362-L407
|
|
const parseField = (field, key) => {
|
|
if (typeof field !== 'string') {
|
|
return field;
|
|
}
|
|
|
|
const typeList = [].concat(types[key]);
|
|
const isPath = typeList.indexOf(path) !== -1;
|
|
const isBool = typeList.indexOf(Boolean) !== -1;
|
|
const isString = typeList.indexOf(String) !== -1;
|
|
const isNumber = typeList.indexOf(Number) !== -1;
|
|
|
|
field = `${field}`.trim();
|
|
|
|
if (/^".*"$/.test(field)) {
|
|
try {
|
|
field = JSON.parse(field);
|
|
} catch (err) {
|
|
throw new Error(`Failed parsing JSON config key ${key}: ${field}`);
|
|
}
|
|
}
|
|
|
|
if (isBool && !isString && field === '') {
|
|
return true;
|
|
}
|
|
|
|
switch (field) { // eslint-disable-line default-case
|
|
case 'true': {
|
|
return true;
|
|
}
|
|
|
|
case 'false': {
|
|
return false;
|
|
}
|
|
|
|
case 'null': {
|
|
return null;
|
|
}
|
|
|
|
case 'undefined': {
|
|
return undefined;
|
|
}
|
|
}
|
|
|
|
field = envReplace(field);
|
|
|
|
if (isPath) {
|
|
const regex = process.platform === 'win32' ? /^~(\/|\\)/ : /^~\//;
|
|
|
|
if (regex.test(field) && process.env.HOME) {
|
|
field = path.resolve(process.env.HOME, field.substr(2));
|
|
}
|
|
|
|
field = path.resolve(field);
|
|
}
|
|
|
|
if (isNumber && !field.isNan()) {
|
|
field = Number(field);
|
|
}
|
|
|
|
return field;
|
|
};
|
|
|
|
// https://github.com/npm/npm/blob/latest/lib/config/find-prefix.js
|
|
const findPrefix = name => {
|
|
name = path.resolve(name);
|
|
|
|
let walkedUp = false;
|
|
|
|
while (path.basename(name) === 'node_modules') {
|
|
name = path.dirname(name);
|
|
walkedUp = true;
|
|
}
|
|
|
|
if (walkedUp) {
|
|
return name;
|
|
}
|
|
|
|
const find = (name, original) => {
|
|
const regex = /^[a-zA-Z]:(\\|\/)?$/;
|
|
|
|
if (name === '/' || (process.platform === 'win32' && regex.test(name))) {
|
|
return original;
|
|
}
|
|
|
|
try {
|
|
const files = fs.readdirSync(name);
|
|
|
|
if (files.indexOf('node_modules') !== -1 || files.indexOf('package.json') !== -1) {
|
|
return name;
|
|
}
|
|
|
|
const dirname = path.dirname(name);
|
|
|
|
if (dirname === name) {
|
|
return original;
|
|
}
|
|
|
|
return find(dirname, original);
|
|
} catch (err) {
|
|
if (name === original) {
|
|
if (err.code === 'ENOENT') {
|
|
return original;
|
|
}
|
|
|
|
throw err;
|
|
}
|
|
|
|
return original;
|
|
}
|
|
};
|
|
|
|
return find(name, name);
|
|
};
|
|
|
|
exports.envReplace = envReplace;
|
|
exports.findPrefix = findPrefix;
|
|
exports.parseField = parseField;
|