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1b6f831875
Following JS ops were moved to separate files in cli/js/ops directory: - compiler - dispatch_json - dispatch_minimal - errors - fetch - fs_events - os - random - repl - resources - runtime_compiler - runtime - tty
61 lines
2 KiB
TypeScript
61 lines
2 KiB
TypeScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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import { DiagnosticItem } from "../diagnostics.ts";
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import { sendSync } from "./dispatch_json.ts";
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/**
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* Format an array of diagnostic items and return them as a single string.
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* @param items An array of diagnostic items to format
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*/
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export function formatDiagnostics(items: DiagnosticItem[]): string {
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return sendSync("op_format_diagnostic", { items });
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}
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export interface Location {
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/** The full url for the module, e.g. `file://some/file.ts` or
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* `https://some/file.ts`. */
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filename: string;
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/** The line number in the file. It is assumed to be 1-indexed. */
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line: number;
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/** The column number in the file. It is assumed to be 1-indexed. */
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column: number;
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}
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/** Given a current location in a module, lookup the source location and
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* return it.
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*
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* When Deno transpiles code, it keep source maps of the transpiled code. This
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* function can be used to lookup the original location. This is automatically
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* done when accessing the `.stack` of an error, or when an uncaught error is
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* logged. This function can be used to perform the lookup for creating better
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* error handling.
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*
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* **Note:** `line` and `column` are 1 indexed, which matches display
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* expectations, but is not typical of most index numbers in Deno.
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*
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* An example:
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*
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* const orig = Deno.applySourceMap({
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* location: "file://my/module.ts",
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* line: 5,
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* column: 15
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* });
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* console.log(`${orig.filename}:${orig.line}:${orig.column}`);
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*
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*/
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export function applySourceMap(location: Location): Location {
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const { filename, line, column } = location;
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// On this side, line/column are 1 based, but in the source maps, they are
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// 0 based, so we have to convert back and forth
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const res = sendSync("op_apply_source_map", {
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filename,
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line: line - 1,
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column: column - 1
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});
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return {
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filename: res.filename,
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line: res.line + 1,
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column: res.column + 1
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};
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}
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