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@finnair/path-parser
Advanced tools
@finnair/path-parser
contains nearley.js based parsers for Path
and PathMatcher
.
See @finnair/path
or instructions on how to use Path
and PathMatcher
.
Install v-validation using yarn
:
yarn add @finnair/path-parser
Or npm
:
npm install @finnair/path-parser
import { parsePath } from '@finnair/path-parser';
parsePath(`$.array[1]["\\"property\\" with spaces and 'quotes'"]`); // JSON string encoded in brackets!
// Path.of('array', 1, `"property" with spaces and 'quotes'`);
// Single quotes also work, but encoding is still JSON string so the value cannot contain ' character
parsePath(`$['single quotes']`); // Path.of('single quotes')
parsePath(`$['single\'quote']`); // Fail!
// ...without using unicode escape
parsePath(`$['\\u0027']`); // Path.of("'");
parsePathMatcher
parses simple JsonPath like expressions. Supported expressions are
Expression | Description |
---|---|
$.property | Identifiers matching RegExp /^[a-zA-Z_][a-zA-Z0-9_]*$/ |
$[0] | Index match |
$.* | Any property matcher, wildcard (matches also array indexes) |
$[*] | Any index matcher, wildcard (matches only array indexes) |
$["JSON string encoded property"] | Property as JSON encoded string |
$['JSON string encoded property'] | Property as single quoted, but otherwise JSON encoded, string(*) |
$[union,"of",4,'components'] | Union matcher that also supports identifiers and JSON encoded strings |
*) This is the official way of JsonPath
, but the specification is a bit unclear on the encoding. In this library we prefer proper JSON string encoding with double quotes.
import { parsePathMatcher } from '@finnair/path-parser';
parsePathMatcher(`$.array[0][*].*['union',"of",properties,1]`);
// PathMatcher.of(
// 'array',
// 0,
// AnyIndex,
// AnyProperty,
// UnionMatcher.of('union', 'of', 'properties', 1)
// )
FAQs
Simple object path as array of strings and numbers
The npm package @finnair/path-parser receives a total of 199 weekly downloads. As such, @finnair/path-parser popularity was classified as not popular.
We found that @finnair/path-parser demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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