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feat: add html element extractor #229

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feat: add html element extractor #229

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b109671
feat: add html element extractor
a2937 Aug 16, 2024
21a02cc
Remove console.log
a2937 Aug 19, 2024
db9c859
Add suggestion
a2937 Mar 12, 2025
28bec71
update documentation
a2937 Mar 12, 2025
22ffb17
Merge remote-tracking branch 'upstream/main' into feat/add-html-head-…
a2937 Mar 12, 2025
567e1bd
Merge remote-tracking branch 'upstream/main' into feat/add-html-head-…
a2937 Mar 12, 2025
2567d73
Apply suggestions from code review
a2937 Mar 18, 2025
ca92c4f
Update lib/__tests__/curriculum-helper.test.tsx
a2937 Mar 18, 2025
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16 changes: 16 additions & 0 deletions lib/__fixtures__/curriculum-helpers-html.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -22,9 +22,25 @@ not a comment
not a comment
`;

const htmlExampleHead = `
<link rel="stylesheet" href="styles.css">
<head>
<meta charset="UTF-8" />
<title>Piano</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
</head>`;

const htmlInnerExample = `
<meta charset="UTF-8" />
<title>Piano</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
`;

const testValues = {
htmlFullExample,
htmlCodeWithCommentsRemoved,
htmlExampleHead,
htmlInnerExample,
};

export default testValues;
17 changes: 16 additions & 1 deletion lib/__tests__/curriculum-helper.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,12 @@ const { stringWithWhiteSpaceChars, stringWithWhiteSpaceCharsRemoved } =

const { cssFullExample, cssCodeWithCommentsRemoved } = cssTestValues;

const { htmlFullExample, htmlCodeWithCommentsRemoved } = htmlTestValues;
const {
htmlFullExample,
htmlCodeWithCommentsRemoved,
htmlExampleHead,
htmlInnerExample,
} = htmlTestValues;

const {
jsCodeWithSingleAndMultLineComments,
Expand Down Expand Up @@ -89,6 +94,16 @@ describe("removeHtmlComments", () => {
});
});

describe("extractHTMLElement", () => {
const { extractHTMLElement } = helper;
it("returns an empty string if no head is found", () => {
expect(typeof extractHTMLElement("", "head")).toBe("string");
});
it("returns inner HTML string if a head is present", () => {
expect(extractHTMLElement(htmlExampleHead, "head")).toBe(htmlInnerExample);
});
});

describe("isCalledWithNoArgs", () => {
const { isCalledWithNoArgs } = helper;
it("returns a boolean", () => {
Expand Down
14 changes: 14 additions & 0 deletions lib/index.ts
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Expand Up @@ -11,6 +11,20 @@ export function removeHtmlComments(str: string): string {
return str.replace(/<!--[\s\S]*?(-->|$)/g, "");
}

/**
* Extracts the inner html of every element inside the head
* @param {String} code a HTML string of the head
* @returns {String} the inner html of every element in the head or an empty string if no head is found
*/

export function extractHTMLElement(code: string, tag: string = "head"): string {
const expression = new RegExp(
"(?<=<" + tag + "\\s*>)(?:.|\\s*)*?(?=<\\/" + tag + "\\s*>)"
);
console.log(expression.source);
return code.match(expression)?.toString() ?? "";
}

/**
* Removes every CSS-comment from the string that is provided
* @param {String} str a CSS-string where the comments need to be removed of
Expand Down