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/* eslint-env jest */
import AmpHtmlValidator from 'next/dist/compiled/amphtml-validator'
export async function validateAMP(/** @type {string} */ html) {
const validatorPath = getBundledAmpValidatorFilepath()
const validator = await getAmpValidatorInstance(validatorPath)
const result = validator.validateString(html)
const errors = result.errors.filter((error) => {
if (error.severity === 'ERROR') {
// Unclear yet if these actually prevent the page from being indexed by the AMP cache.
// These are coming from React so all we can do is ignore them for now.
// <link rel="expect" blocking="render" />
// https://github.com/ampproject/amphtml/issues/40279
if (
error.code === 'DISALLOWED_ATTR' &&
error.params[0] === 'blocking' &&
error.params[1] === 'link'
) {
return false
}
// <template> without type
// https://github.com/ampproject/amphtml/issues/40280
if (
error.code === 'MANDATORY_ATTR_MISSING' &&
error.params[0] === 'type' &&
error.params[1] === 'template'
) {
return false
}
// <template> without type
// https://github.com/ampproject/amphtml/issues/40280
if (
error.code === 'MISSING_REQUIRED_EXTENSION' &&
error.params[0] === 'template' &&
error.params[1] === 'amp-mustache'
) {
return false
}
return true
}
return false
})
const warnings = result.errors.filter((error) => {
return error.severity !== 'ERROR'
})
expect({ errors, warnings }).toEqual({
errors: [],
warnings: [],
})
}
/** @typedef {import('next/dist/compiled/amphtml-validator').Validator} Validator */
/** @type {Map<string | undefined, Promise<Validator>>} */
const instancePromises = new Map()
/**
* This is a workaround for issues with concurrent `AmpHtmlValidator.getInstance()` calls,
* duplicated from 'packages/next/src/export/helpers/get-amp-html-validator.ts'.
* see original code for explanation.
*
* @returns {Promise<Validator>}
* */
function getAmpValidatorInstance(
/** @type {string | undefined} */ validatorPath
) {
let promise = instancePromises.get(validatorPath)
if (!promise) {
// NOTE: if `validatorPath` is undefined, `AmpHtmlValidator` will load the code from its default URL
promise = AmpHtmlValidator.getInstance(validatorPath)
instancePromises.set(validatorPath, promise)
}
return promise
}
/**
* Use the same validator that we use for builds.
* This avoids trying to load one from the network, which can cause random test flakiness.
* (duplicated from 'packages/next/src/export/helpers/get-amp-html-validator.ts')
*/
function getBundledAmpValidatorFilepath() {
return require.resolve(
'next/dist/compiled/amphtml-validator/validator_wasm.js'
)
}
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