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openmeter / api /spec /packages /aip /lib /rules /utils.js
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/**
* Exceptions for PascalCase naming convention.
*/
const pascalCaseExceptions = ['OAuth2', 'URL', 'API', 'UI', 'ID']
/**
* Checks whether a given value is in PascalCase
* @param value the value to check
* @returns true if the value is in PascalCase
*/
export function isPascalCaseNoAcronyms(value) {
if (value === undefined || value === null || value === '') {
return true
}
return new RegExp(
`^(?:[A-Z][a-z0-9]+|${pascalCaseExceptions.join('|')})+[A-Z]?$|^[A-Z]+$`,
).test(value)
}
/**
* Checks whether a given value is in camelCase
* @param value the value to check
* @returns true if the value is in camelCase
*/
export function isCamelCaseNoAcronyms(value) {
if (value === undefined || value === null || value === '') {
return true
}
return /^[^a-zA-Z0-9]?[a-z][a-z0-9]*([A-Z][a-z0-9]+)*[A-Z]?$/.test(value)
}
/**
* Checks whether a given value is in snake_case
* @param value the value to check
* @returns true if the value is in snake_case
*/
export function isSnakeCase(value) {
if (value === undefined || value === null || value === '') {
return true
}
return /^([a-z0-9]+_)*[a-z0-9]+$/.test(value)
}
/**
* Checks whether a given value is in kebab-case
* @param value the value to check
* @returns true if the value is in kebab-case
*/
export function isKebabCase(value) {
if (value === undefined || value === null || value === '') {
return true
}
return /^([a-z0-9]+(-[a-z0-9]+)*)$/.test(value)
}
/**
* Detect the dominant line separator in a source string.
* @param {string} source
* @returns {'\n' | '\r\n'}
*/
export function detectNewline(source) {
return source.includes('\r\n') ? '\r\n' : '\n'
}
/**
* Return the indentation (whitespace from start of line) preceding `position`.
* @param {string} source
* @param {number} position
*/
export function getIndentBefore(source, position) {
const lineStart = source.lastIndexOf('\n', position - 1) + 1
const between = source.slice(lineStart, position)
const match = between.match(/^[ \t]*/)
return match ? match[0] : ''
}
/**
* Strip `/** ... *\/` framing and per-line `*` decoration from a doc comment,
* returning the inner Markdown body. Trims leading/trailing blank lines.
* @param {string} raw the full comment text including `/** ... *\/`
*/
export function extractMarkdownFromDocComment(raw) {
let body = raw
if (body.startsWith('/**')) body = body.slice(3)
if (body.endsWith('*/')) body = body.slice(0, -2)
const lines = body.split(/\r?\n/).map((line) => {
// Strip leading whitespace + a single `*` + an optional space.
return line.replace(/^[ \t]*\*[ \t]?/, '').replace(/[ \t]+$/, '')
})
let start = 0
let end = lines.length
while (start < end && lines[start].trim() === '') start++
while (end > start && lines[end - 1].trim() === '') end--
return lines.slice(start, end).join('\n')
}
/**
* Re-wrap a Markdown body as a TypeSpec doc comment, applying `indent` on each
* line and using `newline` between lines.
* @param {string} markdown
* @param {string} indent
* @param {'\n' | '\r\n'} newline
*/
export function wrapMarkdownAsDocComment(markdown, indent, newline) {
const trimmed = markdown.replace(/\n+$/, '')
if (trimmed === '') {
return `/**${newline}${indent} */`
}
const lines = trimmed.split('\n')
const out = [
'/**',
...lines.map((line) =>
line.length === 0 ? `${indent} *` : `${indent} * ${line}`,
),
`${indent} */`,
]
return out.join(newline)
}