@softwareventures/maintain-project/ignore/ignore.js

Automatically create and maintain TypeScript projects with standard settings for Software Ventures Limited

import { posix } from "path";
import { concat, first, foldFn, mapFn, tail } from "@softwareventures/array";
import { chain } from "@softwareventures/chain";
import { mapNullableFn, mapNullFn } from "@softwareventures/nullable";
import picomatch from "picomatch";
export function ignoreComment(text) {
    return { type: "ignore-comment", text };
}
export function ignoreEntry(text) {
    return { type: "ignore-entry", text };
}
export function isIgnored(ignore, path) {
    return isIgnoredInternal(ignore, posix.normalize(path).split(posix.sep));
}
function isIgnoredInternal(ignore, segments) {
    if (first(segments) === "..") {
        return "not-ignored";
    }
    const subdirectoryStatus = chain(first(segments))
        .map(mapNullableFn(dir => ignore.subdirectories.get(dir)))
        .map(mapNullableFn(ignore => isIgnoredInternal(ignore, tail(segments))))
        .map(mapNullFn(() => "not-ignored")).value;
    if (subdirectoryStatus !== "not-ignored") {
        return subdirectoryStatus;
    }
    const path = posix.join(...segments);
    return chain(ignore.entries)
        .map(concat)
        .map(mapFn(line => isIgnoredByLine(line, path)))
        .map(foldFn((status, lineStatus) => (lineStatus === "not-ignored" ? status : lineStatus), "not-ignored")).value;
}
function isIgnoredByLine(line, path) {
    if (line.type !== "ignore-entry") {
        return "not-ignored";
    }
    const text = line.text.trim();
    const negate = line.text.startsWith("!");
    const matcher = picomatch(text.replace(/^!/u, "").trim(), {
        basename: true,
        posix: false,
        dot: true,
        nobrace: true,
        noextglob: true,
        nonegate: true,
        noquantifiers: true,
        strictSlashes: true
    });
    if (!matcher(path)) {
        return "not-ignored";
    }
    else if (negate) {
        return "explicitly-not-ignored";
    }
    else {
        return "ignored";
    }
}
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