diff options
Diffstat (limited to 'src/util')
-rw-r--r-- | src/util/sugar.js | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/util/sugar.js b/src/util/sugar.js index 58a2c3e9..3c364ee5 100644 --- a/src/util/sugar.js +++ b/src/util/sugar.js @@ -263,11 +263,22 @@ export function delay(ms) { // Stolen from here: https://stackoverflow.com/a/3561711 // // There's a proposal for a native JS function like this, 8ut it's not even -// past stage 1 yet: https://github.com/tc39/proposal-regex-escaping +// past stage ~~1~~ 2 yet: https://github.com/tc39/proposal-regex-escaping export function escapeRegex(string) { return string.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&'); } +// Follows a key path like 'foo.bar.baz' to get an item nested deeply inside +// an object. +export function getNestedProp(obj, key) { + const recursive = (o, k) => + (k.length === 1 + ? o[k[0]] + : recursive(o[k[0]], k.slice(1))); + + return recursive(obj, key.split(/(?<=(?<!\\)(?:\\\\)*)\./)); +} + // Gets the "look" of some arbitrary value. It's like typeof, but smarter. // Don't use this for actually validating types - it's only suitable for // inclusion in error messages. |