diff options
Diffstat (limited to 'node_modules/nodemon/lib/utils/merge.js')
-rw-r--r-- | node_modules/nodemon/lib/utils/merge.js | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/node_modules/nodemon/lib/utils/merge.js b/node_modules/nodemon/lib/utils/merge.js new file mode 100644 index 0000000..1f3440b --- /dev/null +++ b/node_modules/nodemon/lib/utils/merge.js @@ -0,0 +1,47 @@ +var clone = require('./clone'); + +module.exports = merge; + +function typesMatch(a, b) { + return (typeof a === typeof b) && (Array.isArray(a) === Array.isArray(b)); +} + +/** + * A deep merge of the source based on the target. + * @param {Object} source [description] + * @param {Object} target [description] + * @return {Object} [description] + */ +function merge(source, target, result) { + if (result === undefined) { + result = clone(source); + } + + // merge missing values from the target to the source + Object.getOwnPropertyNames(target).forEach(function (key) { + if (source[key] === undefined) { + result[key] = target[key]; + } + }); + + Object.getOwnPropertyNames(source).forEach(function (key) { + var value = source[key]; + + if (target[key] && typesMatch(value, target[key])) { + // merge empty values + if (value === '') { + result[key] = target[key]; + } + + if (Array.isArray(value)) { + if (value.length === 0 && target[key].length) { + result[key] = target[key].slice(0); + } + } else if (typeof value === 'object') { + result[key] = merge(value, target[key]); + } + } + }); + + return result; +}
\ No newline at end of file |