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48 lines
1.1 KiB
Markdown
48 lines
1.1 KiB
Markdown
[](https://nodei.co/npm/damerau-levenshtein/)
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It provides a function that takes two string arguments and returns a hash like this:
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``` javascript
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{
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steps: 5, // Levenstein demerau distance
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relative: 0.7, // steps / length of the longer string
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similarity: 0.3 // 1 - relative
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}
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```
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## Install
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```sh
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npm install damerau-levenshtein
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```
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## Use with ES6 modules
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```js
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import * as levenshtein from 'damerau-levenshtein';
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const lev = levenshtein('hello world', 'Hello World!');
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// { steps: 4, relative: 0.3076923076923077, similarity: 0.6923076923076923 }
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```
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Please see [tests](./test/test.js) for more insights.
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## Use with TypeScript
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```ts
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import * as levenshtein from 'damerau-levenshtein';
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interface LevenshteinResponse {
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steps: number;
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relative: number;
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similarity: number;
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}
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const lev: LevenshteinResponse = levenshtein('hello world', 'Hello World!');
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console.log(lev.steps);
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// 2
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console.log(lev.foo);
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// TypeScript Error: Property 'foo' does not exist on type 'LevenshteinResponse'.
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```
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