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const {markdown} = require("danger")

const {readFileSync, existsSync} = require("fs")

const parseDiff = require("parse-diff")

const diffPath = "./TypeScript/baseline-changes.diff"

if (existsSync(diffPath)) {

const diffContents = readFileSync(diffPath, "utf8")

const diffedFiles = parseDiff(diffContents)

const uninterestingFiles = [".generated.d.ts", "globalThisBlockscopedProperties.types", "mappedTypeRecursiveInference.types"]

const withoutKnownNormalFails = diffedFiles.filter(diff => {

return !uninterestingFiles.filter(suffix => diff.to && diff.to.endsWith(suffix)).length > 0

})

const md = ["## Changed baselines from the TypeScript test suite", "\nThese are the test changes in the TypeScript codebase which showed a difference (excluding a few which will always change), it should give a small sense of what to expect on the TypeScript side if this PR is merged."]

withoutKnownNormalFails.forEach(diff => {

md.push(`#### [${diff.to || diff.from}](https://github.com/microsoft/TypeScript/blob/master/${diff.to || diff.from})`)

md.push("```diff")

diff.chunks.forEach(chunk => {

md.push(chunk.content)

chunk.changes.forEach(change => {

md.push(change.content)

})

})

md.push("```")

})

if (md.length > 2) {

markdown(md.join("\n"))

}

}