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correctly strip .d.ts file extensions #124

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correctly strip .d.ts file extensions #124

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e6dd4bd
correctly strip .d.ts file extensions
davidparkagoda May 20, 2020
d420d21
fix test
davidparkagoda May 20, 2020
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17 changes: 10 additions & 7 deletions src/try-path.ts
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@@ -1,12 +1,15 @@
import * as path from "path";
import { MappingEntry } from "./mapping-entry";
import { dirname } from "path";
import { removeExtension } from "./filesystem";

export interface TryPath {
readonly type: "file" | "extension" | "index" | "package";
export type TryPath = {
readonly type: "file" | "index" | "package";
readonly path: string;
}
} | {
readonly type: "extension";
readonly path: string;
readonly extensionLength: number;
};

/**
* Builds a list of all physical paths to try by:
Expand Down Expand Up @@ -41,7 +44,7 @@ export function getPathsToTry(
pathsToTry.push({ type: "file", path: physicalPath });
pathsToTry.push(
...extensions.map(
e => ({ type: "extension", path: physicalPath + e } as TryPath)
e => ({ type: "extension", path: physicalPath + e, extensionLength: e.length } as TryPath)
)
);
pathsToTry.push({
Expand All @@ -67,7 +70,7 @@ export function getStrippedPath(tryPath: TryPath): string {
: tryPath.type === "file"
? tryPath.path
: tryPath.type === "extension"
? removeExtension(tryPath.path)
? tryPath.path.slice(0, -tryPath.extensionLength)
: tryPath.type === "package"
? tryPath.path
: exhaustiveTypeException(tryPath.type);
Expand All @@ -80,7 +83,7 @@ export function exhaustiveTypeException(check: never): never {
/**
* Matches pattern with a single star against search.
* Star must match at least one character to be considered a match.
* @param patttern for example "foo*"
* @param patttern for example "foo*"
* @param search for example "fooawesomebar"
* @returns the part of search that * matches, or undefined if no match.
*/
Expand Down
18 changes: 14 additions & 4 deletions test/try-path-tests.ts
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Expand Up @@ -49,11 +49,13 @@ describe("mapping-entry", () => {
{ type: "file", path: join("/absolute", "base", "url", "foo2", "bar") },
{
type: "extension",
path: join("/absolute", "base", "url", "foo2", "bar.ts")
path: join("/absolute", "base", "url", "foo2", "bar.ts"),
extensionLength: 3
},
{
type: "extension",
path: join("/absolute", "base", "url", "foo2", "bar.tsx")
path: join("/absolute", "base", "url", "foo2", "bar.tsx"),
extensionLength: 4
},
{
type: "package",
Expand All @@ -69,8 +71,16 @@ describe("mapping-entry", () => {
},
// "*"
{ type: "file", path: join("/absolute", "base", "url", "foo1") },
{ type: "extension", path: join("/absolute", "base", "url", "foo1.ts") },
{ type: "extension", path: join("/absolute", "base", "url", "foo1.tsx") },
{
type: "extension",
path: join("/absolute", "base", "url", "foo1.ts"),
extensionLength: 3
},
{
type: "extension",
path: join("/absolute", "base", "url", "foo1.tsx"),
extensionLength: 4
},
{
type: "package",
path: join("/absolute", "base", "url", "foo1", "package.json")
Expand Down