All in one, self expressive pattern for string case styles
casex is a function that applies a case style given a pattern.
Instead of having a specific function for each case style, I provide a self-expressive pattern that represent the desired output. For example, kebab-case can be represented as ca-se and title case as Ca Se.
npm install --save caseximport { casex } from "casex";
casex({ text: "your text", pattern: "ca-se" }); // your-textBy default, casex uses capitalizations (A-Z), -, _ and spaces (\s) to break the text into words.
Let's take for example i_am the-real JohnDoe:
i: 1st wordam: 2nd+ wordthe: 2nd+ wordreal: 2nd+ wordJohn: 2nd+ wordDoe: 2nd+ word
The default will likely work for most of your cases, but if you wish, you can provide custom delimiters:
casex({ text: "foo.bar,baz", pattern: "Ca Se", delimiters: ".," }); // Foo Bar Baz_Note: The default delimiters are: A-Z\\s_-.
Let's take for example Ca_se:
C: first letter of the first worda: second and subsequent letters of the first word_: anything between the first two and last two letters isglueand will be repeted between wordss: first letter of the second and subsequent wordse: second and subsequent letters of the second and subsequent words
Note: You can use any other letters to describe the pattern, such as aa$aa or na_me. What matters is that it takes the first two and last two letters for checking capitalization and whatever is in the middle is "glue".
Besides using lower and uppercase letters, you can also use:
*: Do not change word-: Remove word
For these examples I'll use the text i_am the-real JohnDoe
lowercase
- Pattern: case
- Output: iamtherealjohndoe
UPPERCASE
- Pattern: CASE
- Output: IAMTHEREALJOHNDOE
snake_case
- Pattern: ca_se
- Output: i_am_the_real_john_doe
spinal-case
- Pattern: ca-se
- Output: i-am-the-real-john-doe
camelCase
- Pattern: caSe
- Output: iAmTheRealJohnDoe
UpperCamelCase
- Pattern: CaSe
- Output: IAmTheRealJohnDoe
Sentence case
- Pattern: Ca se
- Output: I am the real john doe
Title Case
- Pattern: Ca Se
- Output: I Am The Real John Doe
Weird Example
- Pattern: Ca12 34Se
- Output: I12 34Am12 34The12 34Real12 34John12 34Doe
Capitalize first letter
- Pattern: C* **
- Output: I am the real John Doe
Initials
- Input: John Doe
- Pattern: C-S-
- Output: JD
Although for most cases it will work just fine, casex 4.x is not fully compatible previous versions. If you need previous docs please refer to: