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'use strict';
var Promise = require('bluebird');
var get = require('lodash.get');
var readPkgUp = require('read-pkg-up');
var path = require('path');
var debug = require('debug')('get-package-info');
var getInfo = function getInfo(props, dir, result) {
if (!Array.isArray(props)) return Promise.reject(new Error('First argument must be array of properties to retrieve.'));
if (!props.length) return Promise.resolve(result);
debug('Getting props: ', props);
debug('Looking up starting from directory: ', dir);
debug('Result so far:', result);
return Promise.resolve(readPkgUp({ cwd: dir, normalize: false })).then(function (_ref) {
var src = _ref.path;
var pkg = _ref.pkg;
if (!src) {
debug('Couldn\'t find any more package.json files');
var err = new Error('Unable to find all properties in parent package.json files. Missing props: ' + props.map(function (prop) {
return JSON.stringify(prop);
}).join(', '));
err.missingProps = props;
err.result = result;
throw err;
}
debug('Checking props in package.json found at:', src);
var nextProps = [];
props.forEach(function (prop) {
// For props given as array
// Look for props in that order, and when found
// save value under all given props
if (Array.isArray(prop)) {
(function () {
var value = void 0,
sourceProp = void 0;
prop.some(function (p) {
sourceProp = p;
value = get(pkg, p);
return value;
});
if (value !== undefined) {
debug('Found prop:', prop);
prop.forEach(function (p) {
result.values[p] = value;
result.source[p] = { src: src, pkg: pkg, prop: sourceProp };
});
} else {
debug('Couldn\'t find prop:', prop);
nextProps.push(prop);
}
})();
} else {
// For regular string props, just look normally
var _value = get(pkg, prop);
if (_value !== undefined) {
debug('Found prop:', prop);
result.values[prop] = _value;
result.source[prop] = { src: src, pkg: pkg, prop: prop };
} else {
debug('Couldn\'t find prop:', prop);
nextProps.push(prop);
}
}
});
// Still have props to look for, look at another package.json above this one
if (nextProps.length) {
debug('Not all props satisfied, looking for parent package.json');
return getInfo(nextProps, path.join(path.dirname(src), '..'), result);
}
debug('Found all props!');
return result;
});
};
module.exports = function (props, dir, cb) {
return getInfo(props, dir, { values: {}, source: {} }).nodeify(cb);
};
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